strrat | bd1248880dc8c8ddbf23ec2fbe6db2463251fc137d4efbcf827f100e5a413a2c

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
03/07/2023, 08:12

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General

Target
Payment_Advice.jar
Size 70KB
Sample230703-j3valafe93
SHA256 bd1248880dc8c8ddbf23ec2fbe6db2463251fc137d4efbcf827f100e5a413a2c
MD5 96e155635a6002564daf530fb8a7640d
SHA1 1f56272c46862b6ffa167a47d8d2346c26c7053c
SHA512 2bc66a5175d2f9d39a574f4c88fcdb38ca155ea6af748b7649c2e0c929453d26183cf80f5a20225dedaa8b10c9eaf5465e7c406e71a710cae1e5dc47a9d970e7
SSDEEP 1536:k0L6pMH+goZaLfUXI0IykpJu9rSvZrUbfj9GzQ:rH+3aLfJtu9SpUbfj9GzQ
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\USER\S-1-5-21-4129409437-3162877118-52503038-1000\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
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

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
36	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
3208	schtasks.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4220	WMIC.exe
Token: SeSecurityPrivilege	4220	WMIC.exe
Token: SeTakeOwnershipPrivilege	4220	WMIC.exe
Token: SeLoadDriverPrivilege	4220	WMIC.exe
Token: SeSystemProfilePrivilege	4220	WMIC.exe
Token: SeSystemtimePrivilege	4220	WMIC.exe
Token: SeProfSingleProcessPrivilege	4220	WMIC.exe
Token: SeIncBasePriorityPrivilege	4220	WMIC.exe
Token: SeCreatePagefilePrivilege	4220	WMIC.exe
Token: SeBackupPrivilege	4220	WMIC.exe
Token: SeRestorePrivilege	4220	WMIC.exe
Token: SeShutdownPrivilege	4220	WMIC.exe
Token: SeDebugPrivilege	4220	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4220	WMIC.exe
Token: SeRemoteShutdownPrivilege	4220	WMIC.exe
Token: SeUndockPrivilege	4220	WMIC.exe
Token: SeManageVolumePrivilege	4220	WMIC.exe
Token: 33	4220	WMIC.exe
Token: 34	4220	WMIC.exe
Token: 35	4220	WMIC.exe
Token: 36	4220	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4220	WMIC.exe
Token: SeSecurityPrivilege	4220	WMIC.exe
Token: SeTakeOwnershipPrivilege	4220	WMIC.exe
Token: SeLoadDriverPrivilege	4220	WMIC.exe
Token: SeSystemProfilePrivilege	4220	WMIC.exe
Token: SeSystemtimePrivilege	4220	WMIC.exe
Token: SeProfSingleProcessPrivilege	4220	WMIC.exe
Token: SeIncBasePriorityPrivilege	4220	WMIC.exe
Token: SeCreatePagefilePrivilege	4220	WMIC.exe
Token: SeBackupPrivilege	4220	WMIC.exe
Token: SeRestorePrivilege	4220	WMIC.exe
Token: SeShutdownPrivilege	4220	WMIC.exe
Token: SeDebugPrivilege	4220	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4220	WMIC.exe
Token: SeRemoteShutdownPrivilege	4220	WMIC.exe
Token: SeUndockPrivilege	4220	WMIC.exe
Token: SeManageVolumePrivilege	4220	WMIC.exe
Token: 33	4220	WMIC.exe
Token: 34	4220	WMIC.exe
Token: 35	4220	WMIC.exe
Token: 36	4220	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3120	WMIC.exe
Token: SeSecurityPrivilege	3120	WMIC.exe
Token: SeTakeOwnershipPrivilege	3120	WMIC.exe
Token: SeLoadDriverPrivilege	3120	WMIC.exe
Token: SeSystemProfilePrivilege	3120	WMIC.exe
Token: SeSystemtimePrivilege	3120	WMIC.exe
Token: SeProfSingleProcessPrivilege	3120	WMIC.exe
Token: SeIncBasePriorityPrivilege	3120	WMIC.exe
Token: SeCreatePagefilePrivilege	3120	WMIC.exe
Token: SeBackupPrivilege	3120	WMIC.exe
Token: SeRestorePrivilege	3120	WMIC.exe
Token: SeShutdownPrivilege	3120	WMIC.exe
Token: SeDebugPrivilege	3120	WMIC.exe
Token: SeSystemEnvironmentPrivilege	3120	WMIC.exe
Token: SeRemoteShutdownPrivilege	3120	WMIC.exe
Token: SeUndockPrivilege	3120	WMIC.exe
Token: SeManageVolumePrivilege	3120	WMIC.exe
Token: 33	3120	WMIC.exe
Token: 34	3120	WMIC.exe
Token: 35	3120	WMIC.exe
Token: 36	3120	WMIC.exe
Token: SeIncreaseQuotaPrivilege	3120	WMIC.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 1424	1612	java.exe	86
PID 1612 wrote to memory of 1424	1612	java.exe	86
PID 1612 wrote to memory of 1492	1612	java.exe	87
PID 1612 wrote to memory of 1492	1612	java.exe	87
PID 1424 wrote to memory of 3208	1424	cmd.exe	90
PID 1424 wrote to memory of 3208	1424	cmd.exe	90
PID 1492 wrote to memory of 3928	1492	java.exe	91
PID 1492 wrote to memory of 3928	1492	java.exe	91
PID 3928 wrote to memory of 4220	3928	cmd.exe	93
PID 3928 wrote to memory of 4220	3928	cmd.exe	93
PID 1492 wrote to memory of 2396	1492	java.exe	94
PID 1492 wrote to memory of 2396	1492	java.exe	94
PID 2396 wrote to memory of 3120	2396	cmd.exe	98
PID 2396 wrote to memory of 3120	2396	cmd.exe	98
PID 1492 wrote to memory of 2832	1492	java.exe	99
PID 1492 wrote to memory of 2832	1492	java.exe	99
PID 2832 wrote to memory of 3436	2832	cmd.exe	101
PID 2832 wrote to memory of 3436	2832	cmd.exe	101
PID 1492 wrote to memory of 668	1492	java.exe	102
PID 1492 wrote to memory of 668	1492	java.exe	102
PID 668 wrote to memory of 4144	668	cmd.exe	104
PID 668 wrote to memory of 4144	668	cmd.exe	104

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:1612
- 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:1424
- - 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:3208
- 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:1492
- - 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:3928
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4220
- - 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:2396
  - - 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:3120
- - 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:2832
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:. /namespace:'\\root\cimv2' path win32_operatingsystem get version /format:list
      4⤵
      PID:3436
- - 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:668
  - - C:\Windows\System32\Wbem\WMIC.exe
      wmic /node:localhost /namespace:'\\root\securitycenter2' path antivirusproduct get displayname /format:list
      4⤵
      PID:4144

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 bd1248880dc8c8ddbf23ec2fbe6db2463251fc137d4efbcf827f100e5a413a2c
MD5 96e155635a6002564daf530fb8a7640d
SHA1 1f56272c46862b6ffa167a47d8d2346c26c7053c
SHA512 2bc66a5175d2f9d39a574f4c88fcdb38ca155ea6af748b7649c2e0c929453d26183cf80f5a20225dedaa8b10c9eaf5465e7c406e71a710cae1e5dc47a9d970e7
SSDEEP 1536:k0L6pMH+goZaLfUXI0IykpJu9rSvZrUbfj9GzQ:rH+3aLfJtu9SpUbfj9GzQ
MD5 SHA1 SHA512 SSDEEP

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90737d32e3aba4b.timestamp

Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Size 50B
SHA256 7e9d8b05eda6e8a14a9bf3f222f871d05d4898cd248c2201be5a707260b33830
MD5 4d173e24c98e19effe62aac88a0010b8
SHA1 1e211f48715c4780854b36ebf22665f469a19ff4
SHA512 fdf87fa385a3fb7e8b2a4222f72a96340a6df22afd13d5a3cee68276585c4ce686e0b52487c4c15ce8ddd094925b652eba87d8351a2cc5416d4539cc4dcf702f
MD5 SHA1 SHA512

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Payment_Advice.jar

Path C:\Users\Admin\AppData\Roaming\Payment_Advice.jar
Size 70KB
SHA256 bd1248880dc8c8ddbf23ec2fbe6db2463251fc137d4efbcf827f100e5a413a2c
MD5 96e155635a6002564daf530fb8a7640d
SHA1 1f56272c46862b6ffa167a47d8d2346c26c7053c
SHA512 2bc66a5175d2f9d39a574f4c88fcdb38ca155ea6af748b7649c2e0c929453d26183cf80f5a20225dedaa8b10c9eaf5465e7c406e71a710cae1e5dc47a9d970e7
SSDEEP 1536:k0L6pMH+goZaLfUXI0IykpJu9rSvZrUbfj9GzQ:rH+3aLfJtu9SpUbfj9GzQ
MD5 SHA1 SHA512 SSDEEP

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memory/1492-163-0x0000000001080000-0x0000000001081000-memory.dmp

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memory/1492-166-0x0000000001080000-0x0000000001081000-memory.dmp

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memory/1612-143-0x0000000001690000-0x0000000001691000-memory.dmp

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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