modiloader | 0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 17:25

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General

Target

0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe
Size

308KB
MD5

49e73113b097f9dfbd0859ebb504645b
SHA1

108f6cc83f6129f3c3af63ea3008ee353ab42ef9
SHA256

0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b
SHA512

06b250911a0945af9f1fe6eeabee6bf2cabf59c7d6c748145457c6ce73459ca44c87e90fac55721d2b74066b5aca15c1e8521e6e216fe8a0a1bcfccb7e9bb1c4
SSDEEP

3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

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

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

resource	yara_rule
behavioral2/memory/3404-52-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3404-54-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/3404-57-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 3 IoCs

resource	yara_rule
behavioral2/memory/3404-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3404-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3404-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 10 IoCs

resource	yara_rule
behavioral2/memory/4524-4-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4524-6-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4524-9-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3404-41-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/3404-47-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4524-50-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3404-52-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/3404-54-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4896-56-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3404-57-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe

Executes dropped EXE 3 IoCs

pid	Process
4320	csrsll.exe
4896	csrsll.exe
3404	csrsll.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4524-4-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2884-7-0x0000000002B80000-0x0000000002B81000-memory.dmp	upx
behavioral2/memory/3404-41-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3404-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4524-50-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3404-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3404-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4896-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3404-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-983155329-280873152-1838004294-1000\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 2884 set thread context of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 4320 set thread context of 4896	4320	csrsll.exe	100
PID 4320 set thread context of 3404	4320	csrsll.exe	101

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe
Token: SeDebugPrivilege	4896	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe
4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe
4320	csrsll.exe
4896	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 2884 wrote to memory of 4524	2884	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	92
PID 4524 wrote to memory of 3984	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	93
PID 4524 wrote to memory of 3984	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	93
PID 4524 wrote to memory of 3984	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	93
PID 3984 wrote to memory of 3768	3984	cmd.exe	96
PID 3984 wrote to memory of 3768	3984	cmd.exe	96
PID 3984 wrote to memory of 3768	3984	cmd.exe	96
PID 4524 wrote to memory of 4320	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	97
PID 4524 wrote to memory of 4320	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	97
PID 4524 wrote to memory of 4320	4524	0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe	97
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 4896	4320	csrsll.exe	100
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101
PID 4320 wrote to memory of 3404	4320	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe
"C:\Users\Admin\AppData\Local\Temp\0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe
  "C:\Users\Admin\AppData\Local\Temp\0b6b9ac7591582a1249f1859902e6814eb2c184875cf722f6e4daaf52166fc5b.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4524
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OYWGC.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3984
  - - 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
      PID:3768
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4320
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4896
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      PID:3404

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\OYWGC.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
308KB

MD5
dce24f0279792e62e77a07044b49af0b

SHA1
437314189e74720d6b668b0918b085c5f7c40c48

SHA256
67a8a0e440b8fe204bd17d1fbc9281e0176a69c40f9e9ae11e1ff5816d28c81f

SHA512
6b3a26c4752e570f5aa4d67f6dc45a388d920f9ee687c8f01b97250e0bfd57aef1d2344126810135d66366fe08c6e682fffcd149c89810a718d34b085013aaed

Download Submit
memory/2884-3-0x0000000002310000-0x0000000002311000-memory.dmp

Filesize
4KB

Download
memory/2884-55-0x0000000002B80000-0x0000000002B81000-memory.dmp

Filesize
4KB

Download
memory/2884-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2884-7-0x0000000002B80000-0x0000000002B81000-memory.dmp

Filesize
4KB

Download
memory/3404-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3404-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3404-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3404-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3404-41-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4320-43-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/4320-40-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/4320-36-0x00000000021D0000-0x00000000021D1000-memory.dmp

Filesize
4KB

Download
memory/4320-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4524-50-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-4-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4896-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads