modiloader | b67c0a93586ce62991591c10cfcfb338b664ad4fd3b9aac496ef23728b7e2a4b

Analysis

max time kernel
155s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2024, 08:19

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General

Target
8bd9f4402f6d6fce424b00d9ba58f199.exe
Size 894KB
Sample240203-j7261afcbl
SHA256 b67c0a93586ce62991591c10cfcfb338b664ad4fd3b9aac496ef23728b7e2a4b
MD5 8bd9f4402f6d6fce424b00d9ba58f199
SHA1 34f1216963afa798100917b203e1e0a6c09af1f0
SHA512 6e91038d3cf379f27ba352e9fe613b0ec64f504768391aca0a641fd90180d0d685ff09b24f4be929a5fb568b6a3ba64f4aa4c38b41035644f99cf659cf3f6a37
SSDEEP 12288:Yxo7YNQg2YcKify3iTntxrr0cuUPnIpVwDIX9cgtWb2KExgDj48uSeJroREokzN:YKwQrsiK3Sr0ckHCb2Zxg348uS8ogzN
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader evasion persistence trojan

Malware Config

Signatures

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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.EXE

ModiLoader Second Stage 22 IoCs

resource	yara_rule
behavioral2/memory/4032-3-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/4032-4-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/4032-5-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/4032-7-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/4032-18-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-26-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-29-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-42-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-44-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-47-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-48-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-51-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-54-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-57-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-60-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-63-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-66-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-69-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-72-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-75-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-78-0x0000000000400000-0x000000000044B000-memory.dmp	modiloader_stage2
behavioral2/memory/1976-81-0x0000000000400000-0x000000000044B000-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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	8bd9f4402f6d6fce424b00d9ba58f199.EXE

Executes dropped EXE 2 IoCs

pid	Process
2992	mstwain32.exe
1976	mstwain32.EXE

Loads dropped DLL 4 IoCs

pid	Process
1976	mstwain32.EXE
1976	mstwain32.EXE
1976	mstwain32.EXE
1976	mstwain32.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-1-5-21-2398549320-3657759451-817663969-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.EXE"	mstwain32.EXE

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	8bd9f4402f6d6fce424b00d9ba58f199.EXE
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mstwain32.EXE
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.EXE

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
3324	8bd9f4402f6d6fce424b00d9ba58f199.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3324 set thread context of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 2992 set thread context of 1976	2992	mstwain32.exe	94

Drops file in Windows directory 5 IoCs

description	ioc	Process
File created	C:\Windows\mstwain32.exe	8bd9f4402f6d6fce424b00d9ba58f199.EXE
File opened for modification	C:\Windows\mstwain32.exe	8bd9f4402f6d6fce424b00d9ba58f199.EXE
File opened for modification	C:\Windows\mstwain32.EXE	mstwain32.exe
File created	C:\Windows\ntdtcstp.dll	mstwain32.EXE
File created	C:\Windows\cmsetac.dll	mstwain32.EXE

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4032	8bd9f4402f6d6fce424b00d9ba58f199.EXE
Token: SeBackupPrivilege	640	vssvc.exe
Token: SeRestorePrivilege	640	vssvc.exe
Token: SeAuditPrivilege	640	vssvc.exe
Token: SeDebugPrivilege	1976	mstwain32.EXE
Token: SeDebugPrivilege	1976	mstwain32.EXE

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
3324	8bd9f4402f6d6fce424b00d9ba58f199.exe
3324	8bd9f4402f6d6fce424b00d9ba58f199.exe
2992	mstwain32.exe
2992	mstwain32.exe
1976	mstwain32.EXE
1976	mstwain32.EXE

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 3324 wrote to memory of 4032	3324	8bd9f4402f6d6fce424b00d9ba58f199.exe	84
PID 4032 wrote to memory of 2992	4032	8bd9f4402f6d6fce424b00d9ba58f199.EXE	93
PID 4032 wrote to memory of 2992	4032	8bd9f4402f6d6fce424b00d9ba58f199.EXE	93
PID 4032 wrote to memory of 2992	4032	8bd9f4402f6d6fce424b00d9ba58f199.EXE	93
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94
PID 2992 wrote to memory of 1976	2992	mstwain32.exe	94

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	mstwain32.EXE

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\8bd9f4402f6d6fce424b00d9ba58f199.exe
"C:\Users\Admin\AppData\Local\Temp\8bd9f4402f6d6fce424b00d9ba58f199.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3324
- C:\Users\Admin\AppData\Local\Temp\8bd9f4402f6d6fce424b00d9ba58f199.EXE
  8bd9f4402f6d6fce424b00d9ba58f199.EXE
  2⤵
  - Checks computer location settings
  - Checks whether UAC is enabled
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4032
- - C:\Windows\mstwain32.exe
    "C:\Windows\mstwain32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Drops file in Windows directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\mstwain32.EXE
      mstwain32.EXE
      4⤵
      UAC bypass
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Checks whether UAC is enabled
      Drops file in Windows directory
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      System policy modification
      PID:1976

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:640

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

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

cmsetac.dll

Path C:\Windows\cmsetac.dll
Size 33KB
SHA256 3352ba99c68e2ffee4ea92aa5ac241e3c70f3f750454e3657018d8483db8bf49
MD5 3135f9fc8d09c6b7e505db8a2fbb1345
SHA1 f398cb9d210f92e5e5b507016fb96761d1a97784
SHA512 e97b4bd031fffffd519a95583610f342e5192985e4709dbb334ca2e28b9ad5f281189a0f49e82fa479b27f08944bc77613573780afb59342f10487b8385daf66
SSDEEP 768:J+aoi6qZOpQB5ZpOc06HCMN9GT6RJ5BHUEy2YEZZEo:J+av6qZ4QxpP0AtNfRJ5BHxY
MD5 SHA1 SHA512 SSDEEP

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mstwain32.exe

Path C:\Windows\mstwain32.exe
Size 894KB
SHA256 b67c0a93586ce62991591c10cfcfb338b664ad4fd3b9aac496ef23728b7e2a4b
MD5 8bd9f4402f6d6fce424b00d9ba58f199
SHA1 34f1216963afa798100917b203e1e0a6c09af1f0
SHA512 6e91038d3cf379f27ba352e9fe613b0ec64f504768391aca0a641fd90180d0d685ff09b24f4be929a5fb568b6a3ba64f4aa4c38b41035644f99cf659cf3f6a37
SSDEEP 12288:Yxo7YNQg2YcKify3iTntxrr0cuUPnIpVwDIX9cgtWb2KExgDj48uSeJroREokzN:YKwQrsiK3Sr0ckHCb2Zxg348uS8ogzN
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntdtcstp.dll

Path C:\Windows\ntdtcstp.dll
Size 7KB
SHA256 e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
MD5 67587e25a971a141628d7f07bd40ffa0
SHA1 76fcd014539a3bb247cc0b761225f68bd6055f6b
SHA512 6e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350
SSDEEP 96:nPI4WiJu8aFwiFtih01Rl532eJWahK4oDImBx:ndW0u8/Jh0Dl532eJWao4i/
MD5 SHA1 SHA512 SSDEEP

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memory/1976-43-0x0000000002480000-0x0000000002481000-memory.dmp

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memory/1976-46-0x00000000024D0000-0x00000000024DE000-memory.dmp

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memory/1976-81-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-78-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-26-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-75-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-29-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-72-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-36-0x0000000000920000-0x0000000000921000-memory.dmp

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memory/1976-69-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-40-0x00000000024D0000-0x00000000024DE000-memory.dmp

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memory/1976-42-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-66-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-44-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-45-0x0000000000970000-0x0000000000978000-memory.dmp

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memory/1976-63-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-47-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-48-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-51-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-54-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-57-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/1976-60-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/2992-27-0x0000000000400000-0x00000000007AC01A-memory.dmp

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memory/3324-6-0x0000000000400000-0x00000000007AC01A-memory.dmp

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memory/4032-7-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4032-3-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4032-4-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4032-5-0x0000000000400000-0x000000000044B000-memory.dmp

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memory/4032-18-0x0000000000400000-0x000000000044B000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads