modiloader | b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ff

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 06:07

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General

Target

b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
Size

90KB
MD5

bd88aa1e956e955f893cd6e31cb65280
SHA1

3c2016ec16b45ece5a27e8508327be17e71a7610
SHA256

b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ff
SHA512

6862d0b6ad6282792bb049aada94e60ef5bd635d7f30daa9a60a8dce63574e8a632de44f9a149da7ac754db11ce1bb390a57caac83c156ed91f96c90371bd6f7
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 2 IoCs

resource	yara_rule
behavioral1/memory/2956-253-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral1/memory/2956-260-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
476	csrsll.exe
1716	csrsll.exe
2956	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2100 set thread context of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 476 set thread context of 1716	476	csrsll.exe	36
PID 476 set thread context of 2956	476	csrsll.exe	37

UPX packed file 22 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2100-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2100-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2100-90-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2100-83-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2100-102-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2772-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x000b00000001202a-132.dat	upx
behavioral1/memory/2772-134-0x0000000003350000-0x00000000033A3000-memory.dmp	upx
behavioral1/memory/476-150-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2772-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/476-218-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1716-252-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2772-258-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/476-255-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2956-253-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1716-259-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2956-260-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe
Token: SeDebugPrivilege	1716	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
476	csrsll.exe
1716	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2100 wrote to memory of 2772	2100	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	30
PID 2772 wrote to memory of 1644	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	31
PID 2772 wrote to memory of 1644	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	31
PID 2772 wrote to memory of 1644	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	31
PID 2772 wrote to memory of 1644	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	31
PID 1644 wrote to memory of 1528	1644	cmd.exe	33
PID 1644 wrote to memory of 1528	1644	cmd.exe	33
PID 1644 wrote to memory of 1528	1644	cmd.exe	33
PID 1644 wrote to memory of 1528	1644	cmd.exe	33
PID 2772 wrote to memory of 476	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	34
PID 2772 wrote to memory of 476	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	34
PID 2772 wrote to memory of 476	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	34
PID 2772 wrote to memory of 476	2772	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	34
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 1716	476	csrsll.exe	36
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37
PID 476 wrote to memory of 2956	476	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
"C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
  "C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\TRPUH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1644
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:1528
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:476
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1716
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\TRPUH.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
bfdb19244579b3962217c025574aa65c

SHA1
130a7bc2ee37bbaf95cdee83922f8e8047b2ab19

SHA256
c0ffe191bd22add9e58d65d881a7623972884057ce138f101d27bec387f55466

SHA512
b3c4a929826aeffee0b964c0ec7c3f0003e93b56c4c1f21aa55aa46b8f768622d815276a7a921256c59cf5d42151ffacf77dd003060b21bf6d396b6d364b3a00

Download Submit
memory/476-255-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/476-166-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/476-177-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/476-218-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/476-156-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/476-150-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1716-259-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1716-252-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2100-61-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/2100-41-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/2100-29-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/2100-102-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2100-106-0x00000000025D0000-0x0000000002623000-memory.dmp

Filesize
332KB

Download
memory/2100-15-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2100-5-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2100-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2100-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2100-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2100-71-0x00000000004D0000-0x00000000004D1000-memory.dmp

Filesize
4KB

Download
memory/2100-90-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2100-83-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2100-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2100-79-0x00000000004F0000-0x00000000004F2000-memory.dmp

Filesize
8KB

Download
memory/2772-134-0x0000000003350000-0x00000000033A3000-memory.dmp

Filesize
332KB

Download
memory/2772-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-147-0x0000000003350000-0x00000000033A3000-memory.dmp

Filesize
332KB

Download
memory/2772-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-213-0x0000000003350000-0x00000000033A3000-memory.dmp

Filesize
332KB

Download
memory/2772-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-148-0x0000000003350000-0x00000000033A3000-memory.dmp

Filesize
332KB

Download
memory/2772-251-0x0000000003350000-0x00000000033A3000-memory.dmp

Filesize
332KB

Download
memory/2772-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-258-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2772-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2956-253-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2956-260-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads