modiloader | b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ff

Analysis

max time kernel
119s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 4 IoCs

resource	yara_rule
behavioral2/memory/656-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/656-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/656-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/656-63-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe

Executes dropped EXE 3 IoCs

pid	Process
4780	csrsll.exe
2912	csrsll.exe
656	csrsll.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-1-5-21-1045960512-3948844814-3059691613-1000\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 4588 set thread context of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4780 set thread context of 2912	4780	csrsll.exe	104
PID 4780 set thread context of 656	4780	csrsll.exe	105

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4588-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4588-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5012-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5012-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4588-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5012-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000f000000023b4b-29.dat	upx
behavioral2/memory/4780-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5012-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4780-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4780-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/656-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/656-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/656-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/656-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/656-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4780-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5012-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2912-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/656-63-0x0000000000400000-0x0000000000414000-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	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
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe
Token: SeDebugPrivilege	2912	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
4780	csrsll.exe
2912	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 4588 wrote to memory of 5012	4588	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	94
PID 5012 wrote to memory of 2340	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	95
PID 5012 wrote to memory of 2340	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	95
PID 5012 wrote to memory of 2340	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	95
PID 2340 wrote to memory of 3596	2340	cmd.exe	99
PID 2340 wrote to memory of 3596	2340	cmd.exe	99
PID 2340 wrote to memory of 3596	2340	cmd.exe	99
PID 5012 wrote to memory of 4780	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	100
PID 5012 wrote to memory of 4780	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	100
PID 5012 wrote to memory of 4780	5012	b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe	100
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 2912	4780	csrsll.exe	104
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105
PID 4780 wrote to memory of 656	4780	csrsll.exe	105

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:4588
- C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe
  "C:\Users\Admin\AppData\Local\Temp\b4db09c8a09e6506ac4300721add7e36d925a01d4810410bf8b5af70476e89ffN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5012
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FUTHI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - 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:3596
- - 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:4780
  - - 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:2912
  - - 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:656

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

Query Registry

T1012

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\FUTHI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
2568f484ef020baea26431b219b5c7c4

SHA1
3ababc385d0d8583637d5a5481bc5c7c87cd6c8b

SHA256
30f50162e3066124ae67efa6600c1cdbb44f78c90d6ec1dcc7694c235f3f4ab8

SHA512
0b08e593c9641b19036913b175a06d17f92d68601e7c2b3b4a758c5120488d1bbb775e8afa3a99109f92082a8c0cf837123c04d9716ffdb478d92a0f303d5bb2

Download Submit
memory/656-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/656-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/656-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/656-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/656-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/656-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2912-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4588-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-5-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/4588-6-0x0000000002BA0000-0x0000000002BA2000-memory.dmp

Filesize
8KB

Download
memory/4588-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4780-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4780-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5012-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5012-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5012-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5012-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5012-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads