ramnit | 926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

General

Target

926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
Size

120KB
MD5

fcc3e83c605961ce711a28522be916f6
SHA1

18681477b75de6979d9d3c857fa09f72da36ec90
SHA256

926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b
SHA512

b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad
SSDEEP

3072:Ig+3fh/PHrgNUqOBx4J2vNbGfvGnd3gW5ZM4/uBnh:h+3fRb9NdndPZMT7

Score

10^/10

ramnit banker evasion persistence spyware stealer trojan upx 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\\yvsmpfuf\\hckyafev.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 1 IoCs

Processes:

yhftchgcedwfsetd.exe

pid process

1928 yhftchgcedwfsetd.exe

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

pid	process
1928	yhftchgcedwfsetd.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1476-73-0x0000000000400000-0x000000000043957C-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe	upx
behavioral1/memory/1928-82-0x0000000000400000-0x000000000043957C-memory.dmp	upx

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

Loads dropped DLL 4 IoCs

Processes:

926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe

pid	process
1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.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-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\HckYafev = "C:\\Users\\Admin\\AppData\\Local\\yvsmpfuf\\hckyafev.exe"	svchost.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 43 IoCs

Processes:

svchost.exe

pid	process
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe
1604	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

Processes:

pid process

460

pid	process
460

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exesvchost.exesvchost.exeyhftchgcedwfsetd.exe

description	pid	process
Token: SeSecurityPrivilege	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
Token: SeDebugPrivilege	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
Token: SeSecurityPrivilege	1512	svchost.exe
Token: SeSecurityPrivilege	1604	svchost.exe
Token: SeDebugPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeSecurityPrivilege	1928	yhftchgcedwfsetd.exe
Token: SeLoadDriverPrivilege	1928	yhftchgcedwfsetd.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe
Token: SeBackupPrivilege	1604	svchost.exe
Token: SeRestorePrivilege	1604	svchost.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe

description	pid	process	target process
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1512	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1604	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	svchost.exe
PID 1476 wrote to memory of 1928	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	yhftchgcedwfsetd.exe
PID 1476 wrote to memory of 1928	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	yhftchgcedwfsetd.exe
PID 1476 wrote to memory of 1928	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	yhftchgcedwfsetd.exe
PID 1476 wrote to memory of 1928	1476	926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe	yhftchgcedwfsetd.exe

C:\Users\Admin\AppData\Local\Temp\926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe
"C:\Users\Admin\AppData\Local\Temp\926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476

C:\Windows\SysWOW64\svchost.exe
C:\Windows\system32\svchost.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1512

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:1604

C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
"C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1928

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Modify Registry

3

T1112

Bypass User Account Control

1

T1088

Disabling Security Tools

1

T1089

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
C:\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
\Users\Admin\AppData\Local\Temp\yhftchgcedwfsetd.exe
Filesize
120KB

MD5
fcc3e83c605961ce711a28522be916f6

SHA1
18681477b75de6979d9d3c857fa09f72da36ec90

SHA256
926bf338297a71450377e65aa6c0078e71faa674a08b8be39748d60124cec08b

SHA512
b7fa234511234e1c81980d18c34021d5aa93f6c120f4c2be96eb2fbc8dafc24b622d9fc71c18ff75520ba7ac284ecf46f771a0ca333089db4a7d6fc42d1268ad

Download Submit
memory/1476-54-0x0000000076701000-0x0000000076703000-memory.dmp

Filesize
8KB

Download
memory/1476-73-0x0000000000400000-0x000000000043957C-memory.dmp

Filesize
229KB

Download
memory/1512-56-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/1512-58-0x0000000000000000-mapping.dmp

Download
memory/1512-59-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/1604-65-0x0000000020010000-0x0000000020023000-memory.dmp

Filesize
76KB

Download
memory/1604-69-0x0000000020010000-0x0000000020023000-memory.dmp

Filesize
76KB

Download
memory/1604-67-0x0000000000000000-mapping.dmp

Download
memory/1928-78-0x0000000000000000-mapping.dmp

Download
memory/1928-82-0x0000000000400000-0x000000000043957C-memory.dmp

Filesize
229KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads