ramnit | 63803fcc1a77f50780a8b9f94279cc00ea5c2b902f126c75c6de42687e399e1b

General

Target

2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe
Size

1.8MB
MD5

b9e8df87636010e598a8a0f058d39d41
SHA1

5828bcad7c44f49d708ea009fcf42dc06bb9cd98
SHA256

63803fcc1a77f50780a8b9f94279cc00ea5c2b902f126c75c6de42687e399e1b
SHA512

90b0ec14236efa8fdd9c61aef8f4c76b16907883fd5182f3309e9e536b6fa93b3c6b1f5452835712c40624684e2a8cb46522aac3286fa1e367387849bdbbd460
SSDEEP

49152:fypadAFecyug5UvkaPtiUKyIF14YYq0+hTCnRdLhIlV47zNjKnApWA:fyoA8cpg5UvNfKF14YYq1hTCnRa47zNk

Score

10^/10

ramnit banker spyware stealer trojan upx worm

Malware Config

Signatures

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Executes dropped EXE 2 IoCs

pid	Process
4240	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe
2236	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0008000000023087-4.dat	upx
behavioral2/memory/4240-5-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/memory/4240-7-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0008000000023087-8.dat	upx
behavioral2/files/0x0009000000023088-11.dat	upx
behavioral2/memory/2236-13-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral2/files/0x0009000000023088-12.dat	upx
behavioral2/memory/2236-17-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft\pxB169.tmp	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe

Modifies Internet Explorer settings 1 TTPs 22 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateLowDateTime = "2591450259"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingDelete	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingDelete\C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\{CC1A969C-67FF-11EE-9359-56CCDC1D69F6}.dat = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateHighDateTime = "31063052"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\AdminActive\{CC1A969A-67FF-11EE-9359-56CCDC1D69F6} = "0"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLLowDateTime = "1251635200"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastTTLHighDateTime = "50"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastUpdateLowDateTime = "2591450259"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1574508946-349927670-1185736483-1000\SOFTWARE\Microsoft\Internet Explorer\VersionManager\LastCheckForUpdateHighDateTime = "31063052"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe
2236	DesktopLayer.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4816	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe
4816	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe
1400	iexplore.exe
1400	iexplore.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4816 wrote to memory of 4240	4816	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe	88
PID 4816 wrote to memory of 4240	4816	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe	88
PID 4816 wrote to memory of 4240	4816	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe	88
PID 4240 wrote to memory of 2236	4240	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe	89
PID 4240 wrote to memory of 2236	4240	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe	89
PID 4240 wrote to memory of 2236	4240	2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe	89
PID 2236 wrote to memory of 1400	2236	DesktopLayer.exe	90
PID 2236 wrote to memory of 1400	2236	DesktopLayer.exe	90
PID 1400 wrote to memory of 220	1400	iexplore.exe	93
PID 1400 wrote to memory of 220	1400	iexplore.exe	93
PID 1400 wrote to memory of 220	1400	iexplore.exe	93

C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe
"C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JC.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4816
- C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe
  C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4240
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2236
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1400
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1400 CREDAT:17410 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        
        PID:220

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Local\Temp\2023-08-26_b9e8df87636010e598a8a0f058d39d41_mafia_ramnit_JCSrv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/2236-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2236-15-0x00000000772A2000-0x00000000772A3000-memory.dmp

Filesize
4KB

Download
memory/2236-14-0x00000000004E0000-0x00000000004E1000-memory.dmp

Filesize
4KB

Download
memory/2236-16-0x00000000772A2000-0x00000000772A3000-memory.dmp

Filesize
4KB

Download
memory/2236-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4240-6-0x0000000000560000-0x000000000056F000-memory.dmp

Filesize
60KB

Download
memory/4240-7-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4240-5-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4816-0-0x0000000000420000-0x00000000005FE000-memory.dmp

Filesize
1.9MB

Download
memory/4816-1-0x0000000000420000-0x00000000005FE000-memory.dmp

Filesize
1.9MB

Download

Analysis

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