ramnit | c88a8f4362929f801e4de2e9a056c0d81f09bd4545217be34786783f8316f28c

General

Target

a6243d6db924f3a1b34cafc3b9bc5163.exe
Size

99KB
MD5

a6243d6db924f3a1b34cafc3b9bc5163
SHA1

5b4e9109876c1129813f52365344ca54dc77a3aa
SHA256

c88a8f4362929f801e4de2e9a056c0d81f09bd4545217be34786783f8316f28c
SHA512

8abfe25c4c761b096f5f4f4697331284fa2c4aca40330831a5c43498c467955ee7f8e8b15b5bfbf73ed0b3ab70fe571d464ef4e659ced2229d891cedddc7fcd9
SSDEEP

3072:TCuvo0N7CdRp1wHa8tORcXChoqGVk8jwaaHw7Koj4rDM+l7:OuvZgnp1A9WcXuDR

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

T1547.004

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\\aqwjjxbr\\iwoytxki.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
T1548.002

Disable or Modify Tools
T1562.001

Modify Registry
T1112

Processes:

svchost.exe

description ioc process

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

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\iwoytxki.exe	svchost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\iwoytxki.exe	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

acmtvamoffvhussq.exe

pid process

2556 acmtvamoffvhussq.exe

pid	process
2556	acmtvamoffvhussq.exe

Loads dropped DLL 5 IoCs

Processes:

a6243d6db924f3a1b34cafc3b9bc5163.exe

pid	process
2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
2192	a6243d6db924f3a1b34cafc3b9bc5163.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\IwoYtxki = "C:\\Users\\Admin\\AppData\\Local\\aqwjjxbr\\iwoytxki.exe"	svchost.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

svchost.exe

pid	process
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe
2756	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

pid process

476

pid	process
476

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

a6243d6db924f3a1b34cafc3b9bc5163.exesvchost.exesvchost.exeacmtvamoffvhussq.exe

description	pid	process
Token: SeSecurityPrivilege	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
Token: SeDebugPrivilege	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe
Token: SeSecurityPrivilege	2572	svchost.exe
Token: SeSecurityPrivilege	2756	svchost.exe
Token: SeDebugPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeSecurityPrivilege	2556	acmtvamoffvhussq.exe
Token: SeLoadDriverPrivilege	2556	acmtvamoffvhussq.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe
Token: SeBackupPrivilege	2756	svchost.exe
Token: SeRestorePrivilege	2756	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

a6243d6db924f3a1b34cafc3b9bc5163.exe

description	pid	process	target process
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2572	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2756	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	svchost.exe
PID 2192 wrote to memory of 2556	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	acmtvamoffvhussq.exe
PID 2192 wrote to memory of 2556	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	acmtvamoffvhussq.exe
PID 2192 wrote to memory of 2556	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	acmtvamoffvhussq.exe
PID 2192 wrote to memory of 2556	2192	a6243d6db924f3a1b34cafc3b9bc5163.exe	acmtvamoffvhussq.exe

C:\Users\Admin\AppData\Local\Temp\a6243d6db924f3a1b34cafc3b9bc5163.exe
"C:\Users\Admin\AppData\Local\Temp\a6243d6db924f3a1b34cafc3b9bc5163.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2572

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
2⤵
- 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:2756

C:\Users\Admin\AppData\Local\Temp\acmtvamoffvhussq.exe
"C:\Users\Admin\AppData\Local\Temp\acmtvamoffvhussq.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2556

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Modify Registry

3

T1112

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

1

T1562.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\aqwjjxbr\iwoytxki.exe
Filesize
99KB

MD5
a6243d6db924f3a1b34cafc3b9bc5163

SHA1
5b4e9109876c1129813f52365344ca54dc77a3aa

SHA256
c88a8f4362929f801e4de2e9a056c0d81f09bd4545217be34786783f8316f28c

SHA512
8abfe25c4c761b096f5f4f4697331284fa2c4aca40330831a5c43498c467955ee7f8e8b15b5bfbf73ed0b3ab70fe571d464ef4e659ced2229d891cedddc7fcd9

Download Submit
memory/2192-0-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2192-76-0x0000000002BE0000-0x0000000002C1B000-memory.dmp

Filesize
236KB

Download
memory/2192-7-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2192-6-0x00000000774FF000-0x0000000077500000-memory.dmp

Filesize
4KB

Download
memory/2192-53-0x0000000077500000-0x0000000077501000-memory.dmp

Filesize
4KB

Download
memory/2192-1-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2192-5-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2192-8-0x0000000077500000-0x0000000077501000-memory.dmp

Filesize
4KB

Download
memory/2192-2-0x0000000000250000-0x0000000000252000-memory.dmp

Filesize
8KB

Download
memory/2192-63-0x0000000002BE0000-0x0000000002C1B000-memory.dmp

Filesize
236KB

Download
memory/2192-54-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2192-3-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2192-72-0x0000000002BE0000-0x0000000002C1B000-memory.dmp

Filesize
236KB

Download
memory/2192-57-0x00000000774FF000-0x0000000077500000-memory.dmp

Filesize
4KB

Download
memory/2556-80-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2556-78-0x0000000000400000-0x000000000043A578-memory.dmp

Filesize
233KB

Download
memory/2572-20-0x0000000000050000-0x0000000000051000-memory.dmp

Filesize
4KB

Download
memory/2572-22-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/2572-10-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2572-12-0x0000000000050000-0x0000000000051000-memory.dmp

Filesize
4KB

Download
memory/2572-16-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2572-18-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/2572-25-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2572-24-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2572-23-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2756-84-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-88-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-45-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-44-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-29-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-81-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-82-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-83-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-35-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-86-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-87-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-51-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-89-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-90-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-91-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-92-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-93-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-94-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-95-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-96-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-97-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-98-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-99-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2756-100-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads