modiloader | 336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff

Analysis

max time kernel
151s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 18:57

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General

Target

336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe
Size

326KB
MD5

53689dd4a048d9e4439d08929ea6963b
SHA1

05c486bb7e0c341ef191f7fc1e031aa727e05021
SHA256

336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff
SHA512

a8c8af08faaa6d2a0fc3c76be43f46ef92eb1b7005636d2f9cc433d114fdaf0ec6bff11431440cc8d53d6396bc299602d8bdc23ebad066389a84c39d0161d58b
SSDEEP

3072:Ie2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:IsxD5cwohO+O1sVG0/pZ6iPC8

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/2156-60-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/2156-57-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/2156-62-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 3 IoCs

resource	yara_rule
behavioral2/memory/2156-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2156-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2156-62-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 17 IoCs

resource	yara_rule
behavioral2/memory/5016-0-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/2280-7-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/5016-9-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/2280-10-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/2280-11-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/2280-14-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/files/0x000600000001da70-28.dat	UPX
behavioral2/memory/1164-35-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/2280-39-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/2156-49-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/2156-56-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/1164-55-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/2280-58-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/2156-60-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/2156-57-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/868-61-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/2156-62-0x0000000000400000-0x0000000000414000-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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe

Executes dropped EXE 3 IoCs

pid	Process
1164	csrsll.exe
868	csrsll.exe
2156	csrsll.exe

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/5016-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2280-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5016-9-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2280-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2280-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2280-14-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000600000001da70-28.dat	upx
behavioral2/memory/1164-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2280-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1164-41-0x00000000021D0000-0x00000000021D2000-memory.dmp	upx
behavioral2/memory/2156-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2156-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1164-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/2280-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2156-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2156-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/868-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2156-62-0x0000000000400000-0x0000000000414000-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-1-5-21-609813121-2907144057-1731107329-1000\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 5016 set thread context of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 1164 set thread context of 868	1164	csrsll.exe	101
PID 1164 set thread context of 2156	1164	csrsll.exe	102

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	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe
Token: SeDebugPrivilege	868	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe
2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe
1164	csrsll.exe
868	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 5016 wrote to memory of 2280	5016	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	92
PID 2280 wrote to memory of 2956	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	94
PID 2280 wrote to memory of 2956	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	94
PID 2280 wrote to memory of 2956	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	94
PID 2956 wrote to memory of 220	2956	cmd.exe	97
PID 2956 wrote to memory of 220	2956	cmd.exe	97
PID 2956 wrote to memory of 220	2956	cmd.exe	97
PID 2280 wrote to memory of 1164	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	98
PID 2280 wrote to memory of 1164	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	98
PID 2280 wrote to memory of 1164	2280	336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe	98
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 868	1164	csrsll.exe	101
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102
PID 1164 wrote to memory of 2156	1164	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe
"C:\Users\Admin\AppData\Local\Temp\336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Users\Admin\AppData\Local\Temp\336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe
  "C:\Users\Admin\AppData\Local\Temp\336351a321353dffc3a7742b21dd9948e2cbb613f2ed152da6a1746adea5d8ff.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2280
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WJLGE.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2956
  - - 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:220
- - 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:1164
  - - 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:868
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      PID:2156

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\WJLGE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
d7870174490dc9c0227bde5deddd40fc

SHA1
3398f09fea905e60f20daeb57ba0d06704ad46f0

SHA256
66ae81c9e4aba39d098de6760688f4008c9831254ec2d5869e01ba0312dcca4c

SHA512
b36c59fb9da6bb10d7ebb8eb5ec8b0f20c56b3d09c17f22051074f38541ff5882e45d4ecc20f0f26da25b3218c437623f8c648f9b3823d96b14fed43d5ea2bfb

Download Submit
memory/868-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1164-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1164-43-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/1164-47-0x0000000002370000-0x0000000002372000-memory.dmp

Filesize
8KB

Download
memory/1164-45-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/1164-41-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/1164-40-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/1164-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2156-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2156-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2280-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2280-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2280-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2280-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2280-14-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2280-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5016-9-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5016-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/5016-5-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/5016-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5016-4-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/5016-6-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads