strrat | ad2be93a1f1aad3389640d2eb5a32137711cd9fb5b9fbc59b804e19231d46d61

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
31/05/2023, 08:41

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
050031.jar
Size 70KB
Sample230531-klez1sec4x
SHA256 ad2be93a1f1aad3389640d2eb5a32137711cd9fb5b9fbc59b804e19231d46d61
MD5 4481fc350f86230dff7064a3d0ffc1bb
SHA1 140fb15288336bcbe64cc430f218f050763ae49d
SHA512 6401026ef792b41eebcf0d233874a0314784f257295ed172e638e99518549db29386d6c5fc318ed027b8fba1ed4002f604d3d84a355babaf68443b2d33f45a6c
SSDEEP 1536:fZVlyAv/DUBTdJq67LBwkVUsrhUXUcE9JDc0OMSoMBCuVGMrpBBr:R/lX45dcfkCeHcE9xZOMcBHrprr
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strrat persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\050031.jar	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\050031 = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\050031.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\050031 = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\050031.jar\""	java.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
3	ip-api.com

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
724	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	864	WMIC.exe
Token: SeSecurityPrivilege	864	WMIC.exe
Token: SeTakeOwnershipPrivilege	864	WMIC.exe
Token: SeLoadDriverPrivilege	864	WMIC.exe
Token: SeSystemProfilePrivilege	864	WMIC.exe
Token: SeSystemtimePrivilege	864	WMIC.exe
Token: SeProfSingleProcessPrivilege	864	WMIC.exe
Token: SeIncBasePriorityPrivilege	864	WMIC.exe
Token: SeCreatePagefilePrivilege	864	WMIC.exe
Token: SeBackupPrivilege	864	WMIC.exe
Token: SeRestorePrivilege	864	WMIC.exe
Token: SeShutdownPrivilege	864	WMIC.exe
Token: SeDebugPrivilege	864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	864	WMIC.exe
Token: SeRemoteShutdownPrivilege	864	WMIC.exe
Token: SeUndockPrivilege	864	WMIC.exe
Token: SeManageVolumePrivilege	864	WMIC.exe
Token: 33	864	WMIC.exe
Token: 34	864	WMIC.exe
Token: 35	864	WMIC.exe
Token: SeIncreaseQuotaPrivilege	864	WMIC.exe
Token: SeSecurityPrivilege	864	WMIC.exe
Token: SeTakeOwnershipPrivilege	864	WMIC.exe
Token: SeLoadDriverPrivilege	864	WMIC.exe
Token: SeSystemProfilePrivilege	864	WMIC.exe
Token: SeSystemtimePrivilege	864	WMIC.exe
Token: SeProfSingleProcessPrivilege	864	WMIC.exe
Token: SeIncBasePriorityPrivilege	864	WMIC.exe
Token: SeCreatePagefilePrivilege	864	WMIC.exe
Token: SeBackupPrivilege	864	WMIC.exe
Token: SeRestorePrivilege	864	WMIC.exe
Token: SeShutdownPrivilege	864	WMIC.exe
Token: SeDebugPrivilege	864	WMIC.exe
Token: SeSystemEnvironmentPrivilege	864	WMIC.exe
Token: SeRemoteShutdownPrivilege	864	WMIC.exe
Token: SeUndockPrivilege	864	WMIC.exe
Token: SeManageVolumePrivilege	864	WMIC.exe
Token: 33	864	WMIC.exe
Token: 34	864	WMIC.exe
Token: 35	864	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe
Token: SeSystemProfilePrivilege	1932	WMIC.exe
Token: SeSystemtimePrivilege	1932	WMIC.exe
Token: SeProfSingleProcessPrivilege	1932	WMIC.exe
Token: SeIncBasePriorityPrivilege	1932	WMIC.exe
Token: SeCreatePagefilePrivilege	1932	WMIC.exe
Token: SeBackupPrivilege	1932	WMIC.exe
Token: SeRestorePrivilege	1932	WMIC.exe
Token: SeShutdownPrivilege	1932	WMIC.exe
Token: SeDebugPrivilege	1932	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1932	WMIC.exe
Token: SeRemoteShutdownPrivilege	1932	WMIC.exe
Token: SeUndockPrivilege	1932	WMIC.exe
Token: SeManageVolumePrivilege	1932	WMIC.exe
Token: 33	1932	WMIC.exe
Token: 34	1932	WMIC.exe
Token: 35	1932	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1932	WMIC.exe
Token: SeSecurityPrivilege	1932	WMIC.exe
Token: SeTakeOwnershipPrivilege	1932	WMIC.exe
Token: SeLoadDriverPrivilege	1932	WMIC.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1328 wrote to memory of 644	1328	java.exe	29
PID 1328 wrote to memory of 644	1328	java.exe	29
PID 1328 wrote to memory of 644	1328	java.exe	29
PID 1328 wrote to memory of 968	1328	java.exe	30
PID 1328 wrote to memory of 968	1328	java.exe	30
PID 1328 wrote to memory of 968	1328	java.exe	30
PID 644 wrote to memory of 724	644	cmd.exe	31
PID 644 wrote to memory of 724	644	cmd.exe	31
PID 644 wrote to memory of 724	644	cmd.exe	31
PID 968 wrote to memory of 1180	968	java.exe	32
PID 968 wrote to memory of 1180	968	java.exe	32
PID 968 wrote to memory of 1180	968	java.exe	32
PID 1180 wrote to memory of 864	1180	cmd.exe	33
PID 1180 wrote to memory of 864	1180	cmd.exe	33
PID 1180 wrote to memory of 864	1180	cmd.exe	33
PID 968 wrote to memory of 1632	968	java.exe	35
PID 968 wrote to memory of 1632	968	java.exe	35
PID 968 wrote to memory of 1632	968	java.exe	35
PID 1632 wrote to memory of 1932	1632	cmd.exe	36
PID 1632 wrote to memory of 1932	1632	cmd.exe	36
PID 1632 wrote to memory of 1932	1632	cmd.exe	36
PID 968 wrote to memory of 940	968	java.exe	37
PID 968 wrote to memory of 940	968	java.exe	37
PID 968 wrote to memory of 940	968	java.exe	37
PID 940 wrote to memory of 1832	940	cmd.exe	38
PID 940 wrote to memory of 1832	940	cmd.exe	38
PID 940 wrote to memory of 1832	940	cmd.exe	38
PID 968 wrote to memory of 1516	968	java.exe	39
PID 968 wrote to memory of 1516	968	java.exe	39
PID 968 wrote to memory of 1516	968	java.exe	39
PID 1516 wrote to memory of 1796	1516	cmd.exe	40
PID 1516 wrote to memory of 1796	1516	cmd.exe	40
PID 1516 wrote to memory of 1796	1516	cmd.exe	40

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\050031.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1328
- C:\Windows\system32\cmd.exe
  cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\050031.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:644
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\050031.jar"
    3⤵
    - Creates scheduled task(s)
    PID:724
- C:\Program Files\Java\jre7\bin\java.exe
  "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\050031.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:968
- - C:\Windows\system32\cmd.exe
    cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1180
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:864
- - C:\Windows\system32\cmd.exe
    cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1632
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get caption,OSArchitecture /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1932
- - C:\Windows\system32\cmd.exe
    cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:940
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
      4⤵
      PID:1832
- - C:\Windows\system32\cmd.exe
    cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1516
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
      4⤵
      PID:1796

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

050031.jar

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\050031.jar
Size 70KB
SHA256 ad2be93a1f1aad3389640d2eb5a32137711cd9fb5b9fbc59b804e19231d46d61
MD5 4481fc350f86230dff7064a3d0ffc1bb
SHA1 140fb15288336bcbe64cc430f218f050763ae49d
SHA512 6401026ef792b41eebcf0d233874a0314784f257295ed172e638e99518549db29386d6c5fc318ed027b8fba1ed4002f604d3d84a355babaf68443b2d33f45a6c
SSDEEP 1536:fZVlyAv/DUBTdJq67LBwkVUsrhUXUcE9JDc0OMSoMBCuVGMrpBBr:R/lX45dcfkCeHcE9xZOMcBHrprr
MD5 SHA1 SHA512 SSDEEP

Submit Download

050031.jar

Path C:\Users\Admin\AppData\Roaming\050031.jar
Size 70KB
SHA256 ad2be93a1f1aad3389640d2eb5a32137711cd9fb5b9fbc59b804e19231d46d61
MD5 4481fc350f86230dff7064a3d0ffc1bb
SHA1 140fb15288336bcbe64cc430f218f050763ae49d
SHA512 6401026ef792b41eebcf0d233874a0314784f257295ed172e638e99518549db29386d6c5fc318ed027b8fba1ed4002f604d3d84a355babaf68443b2d33f45a6c
SSDEEP 1536:fZVlyAv/DUBTdJq67LBwkVUsrhUXUcE9JDc0OMSoMBCuVGMrpBBr:R/lX45dcfkCeHcE9xZOMcBHrprr
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/968-80-0x00000000000B0000-0x00000000000B1000-memory.dmp

Download

memory/968-82-0x00000000000B0000-0x00000000000B1000-memory.dmp

Download

memory/1328-63-0x0000000000220000-0x0000000000221000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads