strrat | 5ea43aba29b8d052cb0526d8cd39d8ba2ccd9c9be458fb917fe074cce1173af2

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2023, 10:51

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General

Target
PaymentSlip.jar
Size 70KB
Sample230601-mxtcwsdh52
SHA256 5ea43aba29b8d052cb0526d8cd39d8ba2ccd9c9be458fb917fe074cce1173af2
MD5 e913c9d879f18b1ceb0eb3ea6817177c
SHA1 ff120833c18cc2d289f4bcb299b324ddda5355b5
SHA512 8b6a1593e1b22fd06a11b46d5741303e8cef1c438afb7c1db86dd2a7de9d28dadfd47c97934690990db26bbc8c205b1de45d1b08cdd1bbc2aa7afa9f69b39eea
SSDEEP 1536:cATQTyQpmL9zJd9NPWFn0jTYHVb0fEK1G7MvVz6kj7XCIOc:cTk9Ne0jT8V0fEK1G7Mvskj7Xp3
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\PaymentSlip.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-1-5-21-1675742406-747946869-1029867430-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PaymentSlip = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PaymentSlip.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\PaymentSlip = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\PaymentSlip.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
28	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
4068	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4872	WMIC.exe
Token: SeSecurityPrivilege	4872	WMIC.exe
Token: SeTakeOwnershipPrivilege	4872	WMIC.exe
Token: SeLoadDriverPrivilege	4872	WMIC.exe
Token: SeSystemProfilePrivilege	4872	WMIC.exe
Token: SeSystemtimePrivilege	4872	WMIC.exe
Token: SeProfSingleProcessPrivilege	4872	WMIC.exe
Token: SeIncBasePriorityPrivilege	4872	WMIC.exe
Token: SeCreatePagefilePrivilege	4872	WMIC.exe
Token: SeBackupPrivilege	4872	WMIC.exe
Token: SeRestorePrivilege	4872	WMIC.exe
Token: SeShutdownPrivilege	4872	WMIC.exe
Token: SeDebugPrivilege	4872	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4872	WMIC.exe
Token: SeRemoteShutdownPrivilege	4872	WMIC.exe
Token: SeUndockPrivilege	4872	WMIC.exe
Token: SeManageVolumePrivilege	4872	WMIC.exe
Token: 33	4872	WMIC.exe
Token: 34	4872	WMIC.exe
Token: 35	4872	WMIC.exe
Token: 36	4872	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4872	WMIC.exe
Token: SeSecurityPrivilege	4872	WMIC.exe
Token: SeTakeOwnershipPrivilege	4872	WMIC.exe
Token: SeLoadDriverPrivilege	4872	WMIC.exe
Token: SeSystemProfilePrivilege	4872	WMIC.exe
Token: SeSystemtimePrivilege	4872	WMIC.exe
Token: SeProfSingleProcessPrivilege	4872	WMIC.exe
Token: SeIncBasePriorityPrivilege	4872	WMIC.exe
Token: SeCreatePagefilePrivilege	4872	WMIC.exe
Token: SeBackupPrivilege	4872	WMIC.exe
Token: SeRestorePrivilege	4872	WMIC.exe
Token: SeShutdownPrivilege	4872	WMIC.exe
Token: SeDebugPrivilege	4872	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4872	WMIC.exe
Token: SeRemoteShutdownPrivilege	4872	WMIC.exe
Token: SeUndockPrivilege	4872	WMIC.exe
Token: SeManageVolumePrivilege	4872	WMIC.exe
Token: 33	4872	WMIC.exe
Token: 34	4872	WMIC.exe
Token: 35	4872	WMIC.exe
Token: 36	4872	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4768	WMIC.exe
Token: SeSecurityPrivilege	4768	WMIC.exe
Token: SeTakeOwnershipPrivilege	4768	WMIC.exe
Token: SeLoadDriverPrivilege	4768	WMIC.exe
Token: SeSystemProfilePrivilege	4768	WMIC.exe
Token: SeSystemtimePrivilege	4768	WMIC.exe
Token: SeProfSingleProcessPrivilege	4768	WMIC.exe
Token: SeIncBasePriorityPrivilege	4768	WMIC.exe
Token: SeCreatePagefilePrivilege	4768	WMIC.exe
Token: SeBackupPrivilege	4768	WMIC.exe
Token: SeRestorePrivilege	4768	WMIC.exe
Token: SeShutdownPrivilege	4768	WMIC.exe
Token: SeDebugPrivilege	4768	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4768	WMIC.exe
Token: SeRemoteShutdownPrivilege	4768	WMIC.exe
Token: SeUndockPrivilege	4768	WMIC.exe
Token: SeManageVolumePrivilege	4768	WMIC.exe
Token: 33	4768	WMIC.exe
Token: 34	4768	WMIC.exe
Token: 35	4768	WMIC.exe
Token: 36	4768	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4768	WMIC.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 3408 wrote to memory of 4904	3408	java.exe	85
PID 3408 wrote to memory of 4904	3408	java.exe	85
PID 3408 wrote to memory of 4312	3408	java.exe	86
PID 3408 wrote to memory of 4312	3408	java.exe	86
PID 4904 wrote to memory of 4068	4904	cmd.exe	89
PID 4904 wrote to memory of 4068	4904	cmd.exe	89
PID 4312 wrote to memory of 4908	4312	java.exe	90
PID 4312 wrote to memory of 4908	4312	java.exe	90
PID 4908 wrote to memory of 4872	4908	cmd.exe	92
PID 4908 wrote to memory of 4872	4908	cmd.exe	92
PID 4312 wrote to memory of 5112	4312	java.exe	93
PID 4312 wrote to memory of 5112	4312	java.exe	93
PID 5112 wrote to memory of 4768	5112	cmd.exe	95
PID 5112 wrote to memory of 4768	5112	cmd.exe	95
PID 4312 wrote to memory of 2820	4312	java.exe	96
PID 4312 wrote to memory of 2820	4312	java.exe	96
PID 2820 wrote to memory of 996	2820	cmd.exe	98
PID 2820 wrote to memory of 996	2820	cmd.exe	98
PID 4312 wrote to memory of 5048	4312	java.exe	99
PID 4312 wrote to memory of 5048	4312	java.exe	99
PID 5048 wrote to memory of 3052	5048	cmd.exe	101
PID 5048 wrote to memory of 3052	5048	cmd.exe	101

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\PaymentSlip.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3408
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PaymentSlip.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4904
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\PaymentSlip.jar"
    3⤵
    - Creates scheduled task(s)
    PID:4068
- 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\PaymentSlip.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4312
- - 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:4908
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4872
- - 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:5112
  - - 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:4768
- - 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:2820
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
      4⤵
      PID:996
- - 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:5048
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
      4⤵
      PID:3052

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

PaymentSlip.jar

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\PaymentSlip.jar
Size 70KB
SHA256 5ea43aba29b8d052cb0526d8cd39d8ba2ccd9c9be458fb917fe074cce1173af2
MD5 e913c9d879f18b1ceb0eb3ea6817177c
SHA1 ff120833c18cc2d289f4bcb299b324ddda5355b5
SHA512 8b6a1593e1b22fd06a11b46d5741303e8cef1c438afb7c1db86dd2a7de9d28dadfd47c97934690990db26bbc8c205b1de45d1b08cdd1bbc2aa7afa9f69b39eea
SSDEEP 1536:cATQTyQpmL9zJd9NPWFn0jTYHVb0fEK1G7MvVz6kj7XCIOc:cTk9Ne0jT8V0fEK1G7Mvskj7Xp3
MD5 SHA1 SHA512 SSDEEP

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90737d32e3aba4b.timestamp

Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Size 50B
SHA256 1a2ff445d6d32608bbe39ef08d7c5e8a48f9edad4a0a8f030faeee377fa1d8df
MD5 9cd1894a9ef391512ce867adc34527a7
SHA1 39e7a239c93bb254278ebd8a60c4c1b106a7a6a4
SHA512 5195d025ef5fea4dfe50855cc026e24a85736c263cb7e55bb42ce5564e5f196a367c472c9edd13d683ad30fdb0b8a5942b2e39a85731760a7f4d9cfb5e9b4e28
MD5 SHA1 SHA512

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PaymentSlip.jar

Path C:\Users\Admin\AppData\Roaming\PaymentSlip.jar
Size 70KB
SHA256 5ea43aba29b8d052cb0526d8cd39d8ba2ccd9c9be458fb917fe074cce1173af2
MD5 e913c9d879f18b1ceb0eb3ea6817177c
SHA1 ff120833c18cc2d289f4bcb299b324ddda5355b5
SHA512 8b6a1593e1b22fd06a11b46d5741303e8cef1c438afb7c1db86dd2a7de9d28dadfd47c97934690990db26bbc8c205b1de45d1b08cdd1bbc2aa7afa9f69b39eea
SSDEEP 1536:cATQTyQpmL9zJd9NPWFn0jTYHVb0fEK1G7MvVz6kj7XCIOc:cTk9Ne0jT8V0fEK1G7Mvskj7Xp3
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3408-144-0x0000000002C60000-0x0000000002C61000-memory.dmp

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memory/4312-165-0x0000000001190000-0x0000000001191000-memory.dmp

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memory/4312-167-0x0000000001190000-0x0000000001191000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads