ramnit | a07edacf10fb92be5c7d16ae37f226f571b569b4c9eb08c48d8e46009ad303a1

Analysis

max time kernel
120s
max time network
72s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-12-2024 13:14

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General

Target

a07edacf10fb92be5c7d16ae37f226f571b569b4c9eb08c48d8e46009ad303a1N.dll
Size

223KB
MD5

cf3ebe79774079aa315725d0996fcce0
SHA1

8c5577396ca6d2da53a1de3389b435f5d699bca2
SHA256

a07edacf10fb92be5c7d16ae37f226f571b569b4c9eb08c48d8e46009ad303a1
SHA512

d4fead288ed12f04d794eddccbe32d47d72196896a906b9e63bf2445b9a4a4a0b71cac4a8b16ffc10ead275a5b0560405274689423dc038f805b3d9c0ae8a500
SSDEEP

6144:+woIxQEiHVG8W+rCjr1mpTFO1v5G7LwwPDqsksdH2f:BK+JX1mu1v5G797qsksdW

Score

10^/10

ramnit banker defense_evasion discovery 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

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

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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

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

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

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
1244	5zHYL23
1648	ycymxtpwfuiyimyv.exe

Impair Defenses: Safe Mode Boot 1 TTPs 3 IoCs

defense_evasion

Safe Mode Boot

T1562.009

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend	svchost.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc	svchost.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power	svchost.exe

Loads dropped DLL 6 IoCs

pid	Process
1700	rundll32.exe
1700	rundll32.exe
1244	5zHYL23
1244	5zHYL23
1244	5zHYL23
1244	5zHYL23

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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\HtbOsrnq = "C:\\Users\\Admin\\AppData\\Local\\yqmcioha\\htbosrnq.exe"	svchost.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5zHYL23

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe
2880	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
484	Process not Found

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeSecurityPrivilege	1244	5zHYL23
Token: SeDebugPrivilege	1244	5zHYL23
Token: SeSecurityPrivilege	2120	svchost.exe
Token: SeSecurityPrivilege	2880	svchost.exe
Token: SeDebugPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeSecurityPrivilege	1648	ycymxtpwfuiyimyv.exe
Token: SeLoadDriverPrivilege	1648	ycymxtpwfuiyimyv.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe
Token: SeBackupPrivilege	2880	svchost.exe
Token: SeRestorePrivilege	2880	svchost.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1972 wrote to memory of 1700	1972	rundll32.exe	30
PID 1700 wrote to memory of 1244	1700	rundll32.exe	31
PID 1700 wrote to memory of 1244	1700	rundll32.exe	31
PID 1700 wrote to memory of 1244	1700	rundll32.exe	31
PID 1700 wrote to memory of 1244	1700	rundll32.exe	31
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2120	1244	5zHYL23	32
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 2880	1244	5zHYL23	33
PID 1244 wrote to memory of 1648	1244	5zHYL23	34
PID 1244 wrote to memory of 1648	1244	5zHYL23	34
PID 1244 wrote to memory of 1648	1244	5zHYL23	34
PID 1244 wrote to memory of 1648	1244	5zHYL23	34

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\a07edacf10fb92be5c7d16ae37f226f571b569b4c9eb08c48d8e46009ad303a1N.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\a07edacf10fb92be5c7d16ae37f226f571b569b4c9eb08c48d8e46009ad303a1N.dll,#1
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1700
- - C:\Users\Admin\AppData\Local\Temp\5zHYL23
    "5zHYL23"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1244
  - - C:\Windows\SysWOW64\svchost.exe
      C:\Windows\system32\svchost.exe
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2120
  - - 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
      Impair Defenses: Safe Mode Boot
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2880
  - - C:\Users\Admin\AppData\Local\Temp\ycymxtpwfuiyimyv.exe
      "C:\Users\Admin\AppData\Local\Temp\ycymxtpwfuiyimyv.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:1648

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Safe Mode Boot

T1562.009

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\5zHYL23

Filesize
95KB

MD5
59a8da264fd7a5ae49c8ffa33eeb16ce

SHA1
c11ca66a4cce9b7496f214041807da451c7eae2a

SHA256
a96dcd4fe7b6cb854545e91ebc3612c5f88e9aae6adf62b00af31bb1ab304304

SHA512
f05bd6fb82cb6776ef059d7205aecc893a606c742cf0a459830c9780ace0b4a6a938b59cc5b26c2e590b941d07cb8e7890db44fba4e66c5e7d090fe9c39133c7

Download Submit
memory/1244-13-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1244-17-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/1244-19-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1244-98-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1244-12-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1244-18-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1244-14-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1244-47-0x000000007770F000-0x0000000077710000-memory.dmp

Filesize
4KB

Download
memory/1244-96-0x0000000002A10000-0x0000000002A4A000-memory.dmp

Filesize
232KB

Download
memory/1244-87-0x0000000002A00000-0x0000000002A3A000-memory.dmp

Filesize
232KB

Download
memory/1244-88-0x0000000002A00000-0x0000000002A3A000-memory.dmp

Filesize
232KB

Download
memory/1244-89-0x000000007770F000-0x0000000077710000-memory.dmp

Filesize
4KB

Download
memory/1244-69-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1244-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1244-67-0x0000000077710000-0x0000000077711000-memory.dmp

Filesize
4KB

Download
memory/1244-46-0x0000000077710000-0x0000000077711000-memory.dmp

Filesize
4KB

Download
memory/1648-100-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1648-104-0x0000000000400000-0x0000000000439344-memory.dmp

Filesize
228KB

Download
memory/1700-8-0x0000000000150000-0x000000000018A000-memory.dmp

Filesize
232KB

Download
memory/1700-0-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download
memory/1700-10-0x0000000000150000-0x000000000018A000-memory.dmp

Filesize
232KB

Download
memory/1700-9-0x0000000065001000-0x0000000065002000-memory.dmp

Filesize
4KB

Download
memory/2120-27-0x0000000000070000-0x0000000000071000-memory.dmp

Filesize
4KB

Download
memory/2120-29-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2120-35-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2120-34-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2120-23-0x0000000000050000-0x0000000000051000-memory.dmp

Filesize
4KB

Download
memory/2120-33-0x0000000000060000-0x0000000000061000-memory.dmp

Filesize
4KB

Download
memory/2120-28-0x0000000000050000-0x0000000000051000-memory.dmp

Filesize
4KB

Download
memory/2120-21-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2120-36-0x0000000020010000-0x000000002001C000-memory.dmp

Filesize
48KB

Download
memory/2880-48-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-107-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-79-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-70-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-57-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-58-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-64-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-105-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-106-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-40-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-108-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-109-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-110-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-111-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-112-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-113-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download
memory/2880-114-0x0000000020010000-0x000000002002C000-memory.dmp

Filesize
112KB

Download