modiloader | c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-12-2024 10:29

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General

Target

c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
Size

300KB
MD5

928d1835d34170e2d9a50f00297c35a0
SHA1

40e4a2771cf4daf8402e34cf8e2bec1aaa7b94a1
SHA256

c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2
SHA512

e0a3ba515e624a8e96a29b7b605c8ab1aefb2c074bd43f352746d83231c94113e5e4e185c9811836e5b78c9fa9d7f1ee59ddacfaa16bbbd19f304bb35a26b99a
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38G8:UsxD5cwohO+O1sVG0/pZ6iPC8m

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 1 IoCs

resource	yara_rule
behavioral1/memory/2140-255-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1748	csrsll.exe
852	csrsll.exe
2140	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.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-1-5-21-2039016743-699959520-214465309-1000\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 2756 set thread context of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 1748 set thread context of 852	1748	csrsll.exe	35
PID 1748 set thread context of 2140	1748	csrsll.exe	36

UPX packed file 13 IoCs

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

upx

resource	yara_rule
behavioral1/memory/600-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2140-243-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/600-246-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/852-237-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/600-236-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/852-252-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2140-255-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe
Token: SeDebugPrivilege	852	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
1748	csrsll.exe
852	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 2756 wrote to memory of 600	2756	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	30
PID 600 wrote to memory of 1764	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	31
PID 600 wrote to memory of 1764	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	31
PID 600 wrote to memory of 1764	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	31
PID 600 wrote to memory of 1764	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	31
PID 1764 wrote to memory of 2940	1764	cmd.exe	33
PID 1764 wrote to memory of 2940	1764	cmd.exe	33
PID 1764 wrote to memory of 2940	1764	cmd.exe	33
PID 1764 wrote to memory of 2940	1764	cmd.exe	33
PID 600 wrote to memory of 1748	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	34
PID 600 wrote to memory of 1748	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	34
PID 600 wrote to memory of 1748	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	34
PID 600 wrote to memory of 1748	600	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	34
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 852	1748	csrsll.exe	35
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36
PID 1748 wrote to memory of 2140	1748	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
"C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
  "C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:600
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\BPOAI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1764
  - - 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:2940
- - 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:1748
  - - 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:852
  - - 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:2140

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

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
d325154bd1477fe880c263cc6f526470

SHA1
28b7817de35beba087acb0fc15aeb29a15bb96c4

SHA256
b26345cf04c23f4cd4808f1da9f821c9ec9470dd1b8042c152cab6dd2eb03f48

SHA512
136374137af1552b80be6db3cfc6fa374bb51a81f877e586135ea3b45eddecd74f6dd3ad94c8e4bea9b079ede5d7ed73953851649b64f9916c9dc92d2330c769

Download Submit
memory/600-246-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/600-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-236-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/600-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/852-252-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/852-237-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1748-172-0x0000000001C60000-0x0000000001C61000-memory.dmp

Filesize
4KB

Download
memory/1748-150-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1748-160-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2140-255-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2140-243-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2756-99-0x0000000000550000-0x0000000000552000-memory.dmp

Filesize
8KB

Download
memory/2756-39-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2756-59-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2756-69-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/2756-77-0x00000000003F0000-0x00000000003F2000-memory.dmp

Filesize
8KB

Download
memory/2756-79-0x00000000003F0000-0x00000000003F2000-memory.dmp

Filesize
8KB

Download
memory/2756-84-0x0000000000530000-0x0000000000532000-memory.dmp

Filesize
8KB

Download
memory/2756-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/2756-85-0x0000000000540000-0x0000000000542000-memory.dmp

Filesize
8KB

Download
memory/2756-27-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2756-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2756-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2756-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads