modiloader | 87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2024 22:10

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General

Target

87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
Size

90KB
MD5

cecacee60a3fb9be553fc565f3a75111
SHA1

3e607192da971d2b01e4e5b410e639f202c30a45
SHA256

87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f
SHA512

2e7125362e61564c2a72047d399c1b46b12178742d55eba39fcf93df38bdf194b937334d6c47dc2458e179e6b23d97f4dc0708659a2e476cf0bffa39c07984c2
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD0:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3K

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 3 IoCs

resource	yara_rule
behavioral2/memory/2324-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2324-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2324-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe

Executes dropped EXE 3 IoCs

pid	Process
3300	csrsll.exe
840	csrsll.exe
2324	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-1-5-21-2437139445-1151884604-3026847218-1000\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 1744 set thread context of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 3300 set thread context of 840	3300	csrsll.exe	101
PID 3300 set thread context of 2324	3300	csrsll.exe	102

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1744-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1744-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1136-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1136-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1744-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1136-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023ca4-29.dat	upx
behavioral2/memory/1136-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3300-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3300-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2324-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2324-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2324-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3300-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2324-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1136-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/840-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2324-62-0x0000000000400000-0x0000000000414000-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	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.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	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe
Token: SeDebugPrivilege	840	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
3300	csrsll.exe
840	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1744 wrote to memory of 1136	1744	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	84
PID 1136 wrote to memory of 1436	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	87
PID 1136 wrote to memory of 1436	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	87
PID 1136 wrote to memory of 1436	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	87
PID 1436 wrote to memory of 1356	1436	cmd.exe	91
PID 1436 wrote to memory of 1356	1436	cmd.exe	91
PID 1436 wrote to memory of 1356	1436	cmd.exe	91
PID 1136 wrote to memory of 3300	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	92
PID 1136 wrote to memory of 3300	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	92
PID 1136 wrote to memory of 3300	1136	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	92
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 840	3300	csrsll.exe	101
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102
PID 3300 wrote to memory of 2324	3300	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
"C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
  "C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1136
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PXMWM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1436
  - - 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:1356
- - 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:3300
  - - 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:840
  - - 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:2324

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\PXMWM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9d2f02d898e75a1ad69ebfaa4eb3566c

SHA1
772d051786b92c2d261720702e6b294cdf7e6449

SHA256
a5bf2ce592055f2fdf78974f53d44b4eadd3196bb21df8b345bf0a58f4c95f68

SHA512
6ef21da488d666b5553cffe3f65ab11a6b9c6187ccd7fc35d19256f9dcf3b761945754cafe093e96f736b269022f61b1bcde0107cbe7f94e1eeec1a08b7270bc

Download Submit
memory/840-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1136-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1744-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1744-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1744-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1744-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/1744-4-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/1744-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/2324-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2324-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2324-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2324-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2324-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3300-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3300-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3300-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads