strrat | 41fc9828d61ebd2a0cb90b8ce07bc0dd5f67b194ff70163525034683e2e58b04

Analysis

max time kernel
151s
max time network
150s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25-04-2023 06:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Purchase_Order.jar
Size

70KB
MD5

5e0450e34e3883e5ffbb964509d09b8b
SHA1

4bb703d44836892d2ec8a5bd1a38eb9badd2797e
SHA256

41fc9828d61ebd2a0cb90b8ce07bc0dd5f67b194ff70163525034683e2e58b04
SHA512

794d6d1f5ec154e479262df00df01d9a3f0575dc34cf17fe8070dfdc6fb446014a643f4bc574fa1c2d04e6e86b391879aaf8643f362d3666a073836282496fa1
SSDEEP

1536:EnYncm2ccI5Fmd9tz/kC72EsM0OjzSDPNXOjaVYO/M2bN:MQWM/md9tzdz0OaDPNXXVFUKN

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\Purchase_Order.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-1-5-21-1563773381-2037468142-1146002597-1000\Software\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Purchase_Order.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Purchase_Order = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Purchase_Order.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
1632	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	876	WMIC.exe
Token: SeSecurityPrivilege	876	WMIC.exe
Token: SeTakeOwnershipPrivilege	876	WMIC.exe
Token: SeLoadDriverPrivilege	876	WMIC.exe
Token: SeSystemProfilePrivilege	876	WMIC.exe
Token: SeSystemtimePrivilege	876	WMIC.exe
Token: SeProfSingleProcessPrivilege	876	WMIC.exe
Token: SeIncBasePriorityPrivilege	876	WMIC.exe
Token: SeCreatePagefilePrivilege	876	WMIC.exe
Token: SeBackupPrivilege	876	WMIC.exe
Token: SeRestorePrivilege	876	WMIC.exe
Token: SeShutdownPrivilege	876	WMIC.exe
Token: SeDebugPrivilege	876	WMIC.exe
Token: SeSystemEnvironmentPrivilege	876	WMIC.exe
Token: SeRemoteShutdownPrivilege	876	WMIC.exe
Token: SeUndockPrivilege	876	WMIC.exe
Token: SeManageVolumePrivilege	876	WMIC.exe
Token: 33	876	WMIC.exe
Token: 34	876	WMIC.exe
Token: 35	876	WMIC.exe
Token: SeIncreaseQuotaPrivilege	876	WMIC.exe
Token: SeSecurityPrivilege	876	WMIC.exe
Token: SeTakeOwnershipPrivilege	876	WMIC.exe
Token: SeLoadDriverPrivilege	876	WMIC.exe
Token: SeSystemProfilePrivilege	876	WMIC.exe
Token: SeSystemtimePrivilege	876	WMIC.exe
Token: SeProfSingleProcessPrivilege	876	WMIC.exe
Token: SeIncBasePriorityPrivilege	876	WMIC.exe
Token: SeCreatePagefilePrivilege	876	WMIC.exe
Token: SeBackupPrivilege	876	WMIC.exe
Token: SeRestorePrivilege	876	WMIC.exe
Token: SeShutdownPrivilege	876	WMIC.exe
Token: SeDebugPrivilege	876	WMIC.exe
Token: SeSystemEnvironmentPrivilege	876	WMIC.exe
Token: SeRemoteShutdownPrivilege	876	WMIC.exe
Token: SeUndockPrivilege	876	WMIC.exe
Token: SeManageVolumePrivilege	876	WMIC.exe
Token: 33	876	WMIC.exe
Token: 34	876	WMIC.exe
Token: 35	876	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2000	WMIC.exe
Token: SeSecurityPrivilege	2000	WMIC.exe
Token: SeTakeOwnershipPrivilege	2000	WMIC.exe
Token: SeLoadDriverPrivilege	2000	WMIC.exe
Token: SeSystemProfilePrivilege	2000	WMIC.exe
Token: SeSystemtimePrivilege	2000	WMIC.exe
Token: SeProfSingleProcessPrivilege	2000	WMIC.exe
Token: SeIncBasePriorityPrivilege	2000	WMIC.exe
Token: SeCreatePagefilePrivilege	2000	WMIC.exe
Token: SeBackupPrivilege	2000	WMIC.exe
Token: SeRestorePrivilege	2000	WMIC.exe
Token: SeShutdownPrivilege	2000	WMIC.exe
Token: SeDebugPrivilege	2000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	2000	WMIC.exe
Token: SeRemoteShutdownPrivilege	2000	WMIC.exe
Token: SeUndockPrivilege	2000	WMIC.exe
Token: SeManageVolumePrivilege	2000	WMIC.exe
Token: 33	2000	WMIC.exe
Token: 34	2000	WMIC.exe
Token: 35	2000	WMIC.exe
Token: SeIncreaseQuotaPrivilege	2000	WMIC.exe
Token: SeSecurityPrivilege	2000	WMIC.exe
Token: SeTakeOwnershipPrivilege	2000	WMIC.exe
Token: SeLoadDriverPrivilege	2000	WMIC.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 588	1116	java.exe	28
PID 1116 wrote to memory of 588	1116	java.exe	28
PID 1116 wrote to memory of 588	1116	java.exe	28
PID 1116 wrote to memory of 996	1116	java.exe	29
PID 1116 wrote to memory of 996	1116	java.exe	29
PID 1116 wrote to memory of 996	1116	java.exe	29
PID 588 wrote to memory of 1632	588	cmd.exe	30
PID 588 wrote to memory of 1632	588	cmd.exe	30
PID 588 wrote to memory of 1632	588	cmd.exe	30
PID 996 wrote to memory of 1108	996	java.exe	31
PID 996 wrote to memory of 1108	996	java.exe	31
PID 996 wrote to memory of 1108	996	java.exe	31
PID 1108 wrote to memory of 876	1108	cmd.exe	32
PID 1108 wrote to memory of 876	1108	cmd.exe	32
PID 1108 wrote to memory of 876	1108	cmd.exe	32
PID 996 wrote to memory of 1616	996	java.exe	34
PID 996 wrote to memory of 1616	996	java.exe	34
PID 996 wrote to memory of 1616	996	java.exe	34
PID 1616 wrote to memory of 2000	1616	cmd.exe	35
PID 1616 wrote to memory of 2000	1616	cmd.exe	35
PID 1616 wrote to memory of 2000	1616	cmd.exe	35
PID 996 wrote to memory of 1136	996	java.exe	36
PID 996 wrote to memory of 1136	996	java.exe	36
PID 996 wrote to memory of 1136	996	java.exe	36
PID 1136 wrote to memory of 1812	1136	cmd.exe	37
PID 1136 wrote to memory of 1812	1136	cmd.exe	37
PID 1136 wrote to memory of 1812	1136	cmd.exe	37
PID 996 wrote to memory of 1532	996	java.exe	38
PID 996 wrote to memory of 1532	996	java.exe	38
PID 996 wrote to memory of 1532	996	java.exe	38
PID 1532 wrote to memory of 1816	1532	cmd.exe	39
PID 1532 wrote to memory of 1816	1532	cmd.exe	39
PID 1532 wrote to memory of 1816	1532	cmd.exe	39

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\Purchase_Order.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\system32\cmd.exe
  cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Purchase_Order.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:588
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Purchase_Order.jar"
    3⤵
    - Creates scheduled task(s)
    PID:1632
- C:\Program Files\Java\jre7\bin\java.exe
  "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Purchase_Order.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:996
- - 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:1108
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:876
- - 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:1616
  - - 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:2000
- - 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:1136
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
      4⤵
      PID:1812
- - 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:1532
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:localhost /namespace:'\\root\securitycenter' path antivirusproduct get displayname /format:list
      4⤵
      PID:1816

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

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\Purchase_Order.jar

Filesize
70KB

MD5
5e0450e34e3883e5ffbb964509d09b8b

SHA1
4bb703d44836892d2ec8a5bd1a38eb9badd2797e

SHA256
41fc9828d61ebd2a0cb90b8ce07bc0dd5f67b194ff70163525034683e2e58b04

SHA512
794d6d1f5ec154e479262df00df01d9a3f0575dc34cf17fe8070dfdc6fb446014a643f4bc574fa1c2d04e6e86b391879aaf8643f362d3666a073836282496fa1

Download Submit
C:\Users\Admin\AppData\Roaming\Purchase_Order.jar

Filesize
70KB

MD5
5e0450e34e3883e5ffbb964509d09b8b

SHA1
4bb703d44836892d2ec8a5bd1a38eb9badd2797e

SHA256
41fc9828d61ebd2a0cb90b8ce07bc0dd5f67b194ff70163525034683e2e58b04

SHA512
794d6d1f5ec154e479262df00df01d9a3f0575dc34cf17fe8070dfdc6fb446014a643f4bc574fa1c2d04e6e86b391879aaf8643f362d3666a073836282496fa1

Download Submit
memory/996-80-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/996-82-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download
memory/1116-63-0x0000000000120000-0x0000000000121000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads