ramnit | 0ff4e71aa98a2ad56e1202a59efcf05c8b5e2c0f98fced5af41cb3410bcf299e

Analysis

max time kernel
159s
max time network
149s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 18:43

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General

Target

0ff4e71aa98a2ad56e1202a59efcf05c8b5e2c0f98fced5af41cb3410bcf299e.dll
Size

164KB
MD5

558b96b1644a5c38e1daa67107d06307
SHA1

e8a1324ce6b55f1e0376466c275ef75abbfb2683
SHA256

0ff4e71aa98a2ad56e1202a59efcf05c8b5e2c0f98fced5af41cb3410bcf299e
SHA512

bc3bf44aeae09e6c197f61e2c89ae3390308230ac2c74e1ba3e71bb0ac382bdd6f9724bfcc8e6b1cc077e0a01ea3783292a9ba8fd5df141641502dc1c82657b2
SSDEEP

3072:dGJ1uCEt8tOF5pU+F+X+AWVcupt3hhY1vpUZyzAmf0CSK7nEo69RLwv69dRmqe2v:QJnobn+m+1qB8A4kgqe21Vzn

Score

10^/10

ramnit banker evasion persistence spyware stealer trojan worm

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "userinit.exe,C:\\Users\\Admin\\AppData\\Local\\otwtlacx\\waogvdll.exe"	svchost.exe

Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit
UAC bypass 3 TTPs 1 IoCs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe
Executes dropped EXE 2 IoCs

Processes:

rundll32mgr.exeofjexfnuyxbctbry.exe

pid process

1732 rundll32mgr.exe
1084 ofjexfnuyxbctbry.exe
Checks BIOS information in registry 2 TTPs 1 IoCs
BIOS information is often read in order to detect sandboxing environments.

Query Registry
T1012

System Information Discovery
T1082

Processes:

svchost.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

pid	process
1732	rundll32mgr.exe
1084	ofjexfnuyxbctbry.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe

Drops startup file 2 IoCs

Processes:

svchost.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\waogvdll.exe	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\waogvdll.exe	svchost.exe

Loads dropped DLL 6 IoCs

Processes:

rundll32.exerundll32mgr.exe

pid process

1208 rundll32.exe
1208 rundll32.exe
1732 rundll32mgr.exe
1732 rundll32mgr.exe
1732 rundll32mgr.exe
1732 rundll32mgr.exe

pid	process
1208	rundll32.exe
1208	rundll32.exe
1732	rundll32mgr.exe
1732	rundll32mgr.exe
1732	rundll32mgr.exe
1732	rundll32mgr.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\WaoGvdll = "C:\\Users\\Admin\\AppData\\Local\\otwtlacx\\waogvdll.exe"	svchost.exe

Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File created C:\Windows\SysWOW64\rundll32mgr.exe rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2020 1208 WerFault.exe rundll32.exe

description	ioc	process
File created	C:\Windows\SysWOW64\rundll32mgr.exe	rundll32.exe

pid	pid_target	process	target process
2020	1208	WerFault.exe	rundll32.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

Processes:

svchost.exe

pid	process
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe
760	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

pid process

460

pid	process
460

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

rundll32mgr.exesvchost.exesvchost.exeofjexfnuyxbctbry.exe

description	pid	process
Token: SeSecurityPrivilege	1732	rundll32mgr.exe
Token: SeDebugPrivilege	1732	rundll32mgr.exe
Token: SeSecurityPrivilege	560	svchost.exe
Token: SeSecurityPrivilege	760	svchost.exe
Token: SeDebugPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeSecurityPrivilege	1084	ofjexfnuyxbctbry.exe
Token: SeLoadDriverPrivilege	1084	ofjexfnuyxbctbry.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe
Token: SeBackupPrivilege	760	svchost.exe
Token: SeRestorePrivilege	760	svchost.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

rundll32.exerundll32.exerundll32mgr.exe

description	pid	process	target process
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 2040 wrote to memory of 1208	2040	rundll32.exe	rundll32.exe
PID 1208 wrote to memory of 1732	1208	rundll32.exe	rundll32mgr.exe
PID 1208 wrote to memory of 1732	1208	rundll32.exe	rundll32mgr.exe
PID 1208 wrote to memory of 1732	1208	rundll32.exe	rundll32mgr.exe
PID 1208 wrote to memory of 1732	1208	rundll32.exe	rundll32mgr.exe
PID 1208 wrote to memory of 2020	1208	rundll32.exe	WerFault.exe
PID 1208 wrote to memory of 2020	1208	rundll32.exe	WerFault.exe
PID 1208 wrote to memory of 2020	1208	rundll32.exe	WerFault.exe
PID 1208 wrote to memory of 2020	1208	rundll32.exe	WerFault.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 560	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 760	1732	rundll32mgr.exe	svchost.exe
PID 1732 wrote to memory of 1084	1732	rundll32mgr.exe	ofjexfnuyxbctbry.exe
PID 1732 wrote to memory of 1084	1732	rundll32mgr.exe	ofjexfnuyxbctbry.exe
PID 1732 wrote to memory of 1084	1732	rundll32mgr.exe	ofjexfnuyxbctbry.exe
PID 1732 wrote to memory of 1084	1732	rundll32mgr.exe	ofjexfnuyxbctbry.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ff4e71aa98a2ad56e1202a59efcf05c8b5e2c0f98fced5af41cb3410bcf299e.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2040

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\0ff4e71aa98a2ad56e1202a59efcf05c8b5e2c0f98fced5af41cb3410bcf299e.dll,#1
2⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1208

C:\Windows\SysWOW64\rundll32mgr.exe
C:\Windows\SysWOW64\rundll32mgr.exe
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1732

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
4⤵
- Suspicious use of AdjustPrivilegeToken
PID:560

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
4⤵
- Modifies WinLogon for persistence
- UAC bypass
- Checks BIOS information in registry
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:760

C:\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe
"C:\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1208 -s 228
3⤵
- Program crash
PID:2020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Winlogon Helper DLL

T1004

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

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\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
C:\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
C:\Windows\SysWOW64\rundll32mgr.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Users\Admin\AppData\Local\Temp\ofjexfnuyxbctbry.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
\Windows\SysWOW64\rundll32mgr.exe

Filesize
110KB

MD5
f71fbb1f80eb18d999ebf7523c245afd

SHA1
b498b16f05362c69a4de7a9820a6ead7c4af3735

SHA256
fdc2a8b0fd518ad4573b2b51b189ee22d7bcf903458ee7468f9fece27bce0e7f

SHA512
f0e8c10d8784d12b26c2c470a927b35d4f69d7a5662d31b0cc83519da1544a2cae19522ea9534d9437fdc2e1219eac79586ff4858bd223ea908784b12f28c48b

Download Submit
memory/560-64-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/560-66-0x0000000000000000-mapping.dmp

Download
memory/560-67-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/760-75-0x0000000000000000-mapping.dmp

Download
memory/760-73-0x0000000020010000-0x0000000020023000-memory.dmp

Filesize
76KB

Download
memory/760-77-0x0000000020010000-0x0000000020023000-memory.dmp

Filesize
76KB

Download
memory/1084-94-0x0000000000400000-0x0000000000437B80-memory.dmp

Filesize
222KB

Download
memory/1084-93-0x0000000000400000-0x0000000000437B80-memory.dmp

Filesize
222KB

Download
memory/1084-88-0x0000000000000000-mapping.dmp

Download
memory/1208-55-0x0000000075991000-0x0000000075993000-memory.dmp

Filesize
8KB

Download
memory/1208-54-0x0000000000000000-mapping.dmp

Download
memory/1208-81-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/1208-82-0x0000000000120000-0x0000000000158000-memory.dmp

Filesize
224KB

Download
memory/1732-58-0x0000000000000000-mapping.dmp

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memory/1732-92-0x00000000026A0000-0x00000000026D8000-memory.dmp

Filesize
224KB

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memory/1732-83-0x0000000000400000-0x0000000000437B80-memory.dmp

Filesize
222KB

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memory/2020-61-0x0000000000000000-mapping.dmp

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