modiloader | 87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7

Analysis

max time kernel
119s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-12-2024 04:17

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General

Target

87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
Size

90KB
MD5

8a62fc602f4e04f0fa89b8b2ef77fe20
SHA1

b6d325290e9a187ed3c73d6a04a0e29a7e071be7
SHA256

87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7
SHA512

fc52d803840999349c3b94b460c090d5b67a7fab05ddffaa91b64e7a4346109543b162c0697f689abd110a1859f446cf5244deffe871117cdf18f712503f29a6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDn:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3V

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/1672-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1672-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe

Executes dropped EXE 3 IoCs

pid	Process
4544	csrsll.exe
1928	csrsll.exe
1672	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-1-5-21-3350944739-639801879-157714471-1000\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 3180 set thread context of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 4544 set thread context of 1928	4544	csrsll.exe	95
PID 4544 set thread context of 1672	4544	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3180-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3180-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4908-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4908-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3180-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4908-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c86-29.dat	upx
behavioral2/memory/4908-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4544-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1672-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-52-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1672-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4544-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1672-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4908-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1672-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1672-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1928-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1672-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe
Token: SeDebugPrivilege	1928	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
4544	csrsll.exe
1928	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 3180 wrote to memory of 4908	3180	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	83
PID 4908 wrote to memory of 5084	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	84
PID 4908 wrote to memory of 5084	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	84
PID 4908 wrote to memory of 5084	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	84
PID 5084 wrote to memory of 1680	5084	cmd.exe	88
PID 5084 wrote to memory of 1680	5084	cmd.exe	88
PID 5084 wrote to memory of 1680	5084	cmd.exe	88
PID 4908 wrote to memory of 4544	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	89
PID 4908 wrote to memory of 4544	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	89
PID 4908 wrote to memory of 4544	4908	87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe	89
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1928	4544	csrsll.exe	95
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96
PID 4544 wrote to memory of 1672	4544	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
"C:\Users\Admin\AppData\Local\Temp\87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3180
- C:\Users\Admin\AppData\Local\Temp\87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe
  "C:\Users\Admin\AppData\Local\Temp\87b1d1a4d5202dd68eea705ffdba95f0ca1f8f0c96d2d0d261d2fe8a67483fc7N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FJXGG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:5084
  - - 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:1680
- - 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:4544
  - - 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:1928
  - - 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:1672

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\FJXGG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
1a5fa0a3d490991dbf58e3aa28a01f19

SHA1
64dec7fb40f175fb188314707b3891f20b24556a

SHA256
c765aadc545cca4f01b65c3a1c9e0253975441d4a11b6657e31a4619dd90d00d

SHA512
145b77e1e520562fcaab42c13d896819768156ae1cf2340e5546f9716855b6b59dec66771b198f5cd7da9205a122333270b6ae2f0bba99b17223af55477f52e0

Download Submit
memory/1672-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1672-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1672-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1672-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1672-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1672-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3180-4-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3180-3-0x00000000021A0000-0x00000000021A2000-memory.dmp

Filesize
8KB

Download
memory/3180-6-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3180-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3180-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3180-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-52-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4544-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4908-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4908-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4908-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4908-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4908-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads