strrat | 3a55138d4ba6decc5047aea525b402584f1cc0ac9149f3f296b10e795fca8ce6

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2023, 08:11

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General

Target
Payment_Advice.jar
Size 70KB
Sample230531-j3aaeseb5v
SHA256 3a55138d4ba6decc5047aea525b402584f1cc0ac9149f3f296b10e795fca8ce6
MD5 21d4eac22848040db50222ffd856f74d
SHA1 aaa535ca49c0165d980c26f2d71629d8b54bb23d
SHA512 74c6b9adb6cd61a093343c29b4bdf40dc4c39e1b1435a6e4cf4e9a254db4837bda78be94672748dd1c122faa3f71e15f689111451231a3f766d3ce3715215089
SSDEEP 1536:TyMEy4adXf+zc6NbssIhP5XsZMDPW83+zKjqDrWiVvTpckvao:TyMEy4a5v6ZCNsgvgKZiVvnyo
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\Payment_Advice.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Payment_Advice = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Payment_Advice.jar\""	java.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Payment_Advice = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\Payment_Advice.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
19	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
4596	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4648	WMIC.exe
Token: SeSecurityPrivilege	4648	WMIC.exe
Token: SeTakeOwnershipPrivilege	4648	WMIC.exe
Token: SeLoadDriverPrivilege	4648	WMIC.exe
Token: SeSystemProfilePrivilege	4648	WMIC.exe
Token: SeSystemtimePrivilege	4648	WMIC.exe
Token: SeProfSingleProcessPrivilege	4648	WMIC.exe
Token: SeIncBasePriorityPrivilege	4648	WMIC.exe
Token: SeCreatePagefilePrivilege	4648	WMIC.exe
Token: SeBackupPrivilege	4648	WMIC.exe
Token: SeRestorePrivilege	4648	WMIC.exe
Token: SeShutdownPrivilege	4648	WMIC.exe
Token: SeDebugPrivilege	4648	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4648	WMIC.exe
Token: SeRemoteShutdownPrivilege	4648	WMIC.exe
Token: SeUndockPrivilege	4648	WMIC.exe
Token: SeManageVolumePrivilege	4648	WMIC.exe
Token: 33	4648	WMIC.exe
Token: 34	4648	WMIC.exe
Token: 35	4648	WMIC.exe
Token: 36	4648	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4648	WMIC.exe
Token: SeSecurityPrivilege	4648	WMIC.exe
Token: SeTakeOwnershipPrivilege	4648	WMIC.exe
Token: SeLoadDriverPrivilege	4648	WMIC.exe
Token: SeSystemProfilePrivilege	4648	WMIC.exe
Token: SeSystemtimePrivilege	4648	WMIC.exe
Token: SeProfSingleProcessPrivilege	4648	WMIC.exe
Token: SeIncBasePriorityPrivilege	4648	WMIC.exe
Token: SeCreatePagefilePrivilege	4648	WMIC.exe
Token: SeBackupPrivilege	4648	WMIC.exe
Token: SeRestorePrivilege	4648	WMIC.exe
Token: SeShutdownPrivilege	4648	WMIC.exe
Token: SeDebugPrivilege	4648	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4648	WMIC.exe
Token: SeRemoteShutdownPrivilege	4648	WMIC.exe
Token: SeUndockPrivilege	4648	WMIC.exe
Token: SeManageVolumePrivilege	4648	WMIC.exe
Token: 33	4648	WMIC.exe
Token: 34	4648	WMIC.exe
Token: 35	4648	WMIC.exe
Token: 36	4648	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1440	WMIC.exe
Token: SeSecurityPrivilege	1440	WMIC.exe
Token: SeTakeOwnershipPrivilege	1440	WMIC.exe
Token: SeLoadDriverPrivilege	1440	WMIC.exe
Token: SeSystemProfilePrivilege	1440	WMIC.exe
Token: SeSystemtimePrivilege	1440	WMIC.exe
Token: SeProfSingleProcessPrivilege	1440	WMIC.exe
Token: SeIncBasePriorityPrivilege	1440	WMIC.exe
Token: SeCreatePagefilePrivilege	1440	WMIC.exe
Token: SeBackupPrivilege	1440	WMIC.exe
Token: SeRestorePrivilege	1440	WMIC.exe
Token: SeShutdownPrivilege	1440	WMIC.exe
Token: SeDebugPrivilege	1440	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1440	WMIC.exe
Token: SeRemoteShutdownPrivilege	1440	WMIC.exe
Token: SeUndockPrivilege	1440	WMIC.exe
Token: SeManageVolumePrivilege	1440	WMIC.exe
Token: 33	1440	WMIC.exe
Token: 34	1440	WMIC.exe
Token: 35	1440	WMIC.exe
Token: 36	1440	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1440	WMIC.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 4480	2044	java.exe	84
PID 2044 wrote to memory of 4480	2044	java.exe	84
PID 2044 wrote to memory of 3536	2044	java.exe	85
PID 2044 wrote to memory of 3536	2044	java.exe	85
PID 4480 wrote to memory of 4596	4480	cmd.exe	88
PID 4480 wrote to memory of 4596	4480	cmd.exe	88
PID 3536 wrote to memory of 1696	3536	java.exe	89
PID 3536 wrote to memory of 1696	3536	java.exe	89
PID 1696 wrote to memory of 4648	1696	cmd.exe	91
PID 1696 wrote to memory of 4648	1696	cmd.exe	91
PID 3536 wrote to memory of 3212	3536	java.exe	92
PID 3536 wrote to memory of 3212	3536	java.exe	92
PID 3212 wrote to memory of 1440	3212	cmd.exe	94
PID 3212 wrote to memory of 1440	3212	cmd.exe	94
PID 3536 wrote to memory of 4344	3536	java.exe	95
PID 3536 wrote to memory of 4344	3536	java.exe	95
PID 4344 wrote to memory of 4216	4344	cmd.exe	97
PID 4344 wrote to memory of 4216	4344	cmd.exe	97
PID 3536 wrote to memory of 2784	3536	java.exe	98
PID 3536 wrote to memory of 2784	3536	java.exe	98
PID 2784 wrote to memory of 4920	2784	cmd.exe	100
PID 2784 wrote to memory of 4920	2784	cmd.exe	100

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:\ProgramData\Oracle\Java\javapath\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\Payment_Advice.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Payment_Advice.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4480
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Payment_Advice.jar"
    3⤵
    - Creates scheduled task(s)
    PID:4596
- C:\Program Files\Java\jre1.8.0_66\bin\java.exe
  "C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\Payment_Advice.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3536
- - 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:1696
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4648
- - 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:3212
  - - 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:1440
- - 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:4344
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
      4⤵
      PID:4216
- - C:\Windows\SYSTEM32\cmd.exe
    cmd.exe /c "wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
      4⤵
      PID:4920

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

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Downloads

Payment_Advice.jar

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\Payment_Advice.jar
Size 70KB
SHA256 3a55138d4ba6decc5047aea525b402584f1cc0ac9149f3f296b10e795fca8ce6
MD5 21d4eac22848040db50222ffd856f74d
SHA1 aaa535ca49c0165d980c26f2d71629d8b54bb23d
SHA512 74c6b9adb6cd61a093343c29b4bdf40dc4c39e1b1435a6e4cf4e9a254db4837bda78be94672748dd1c122faa3f71e15f689111451231a3f766d3ce3715215089
SSDEEP 1536:TyMEy4adXf+zc6NbssIhP5XsZMDPW83+zKjqDrWiVvTpckvao:TyMEy4a5v6ZCNsgvgKZiVvnyo
MD5 SHA1 SHA512 SSDEEP

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90737d32e3aba4b.timestamp

Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Size 50B
SHA256 db1ca2f0288ac6f62496945532bd77049ae7c1190104896807f7f2f78d415c05
MD5 875f2efcbc3da54c4cb95a5cfa237a7b
SHA1 fcaaf8e1454c94c5966729c4d7c77812c88e05cd
SHA512 fb73ca646e92194d110a20e875592836da5304ad62e7e506742e36de55f1d622bddfec6171ee82f13af5ba8cf3aefa9826592a7e952b3c32a65aafcd8c287631
MD5 SHA1 SHA512

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Payment_Advice.jar

Path C:\Users\Admin\AppData\Roaming\Payment_Advice.jar
Size 70KB
SHA256 3a55138d4ba6decc5047aea525b402584f1cc0ac9149f3f296b10e795fca8ce6
MD5 21d4eac22848040db50222ffd856f74d
SHA1 aaa535ca49c0165d980c26f2d71629d8b54bb23d
SHA512 74c6b9adb6cd61a093343c29b4bdf40dc4c39e1b1435a6e4cf4e9a254db4837bda78be94672748dd1c122faa3f71e15f689111451231a3f766d3ce3715215089
SSDEEP 1536:TyMEy4adXf+zc6NbssIhP5XsZMDPW83+zKjqDrWiVvTpckvao:TyMEy4a5v6ZCNsgvgKZiVvnyo
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2044-143-0x00000000020E0000-0x00000000020E1000-memory.dmp

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memory/3536-166-0x0000000002420000-0x0000000002421000-memory.dmp

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memory/3536-168-0x0000000002420000-0x0000000002421000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads