strrat | 6e15e2d3e60350e056f853cab536d8bbe41545520f1e1144bc3b7f1feaeb998e

Analysis

max time kernel
139s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
10/09/2023, 01:51

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General

Target
8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar
Size 67KB
Sample230910-caa8paef7s
SHA256 8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0
MD5 b855ca710ae11c6730584d08342243a4
SHA1 fd1b145fd8051e4df89c8437314854871e4c0dd4
SHA512 b56d7e8cd0811cd5b8171f651ccc4052a635202f4269654e8e2be924c425c44c94dc732d8e6e3796d79d1a430f9bd4ac742d4c816f1767ab6d9acffd6b5be6a8
SSDEEP 768:j2KCMNxETH27vqgMPRkr7keHenb3dc1qCzh9UGJpj6g/t0a58EppolxACCaMo7n0:SaETHqvqLkrF1qCjPp6g/Kq8rxuNIZW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

strrat persistence stealer trojan

Malware Config

Extracted

Family

strrat

efcc.duckdns.org:1243
127.0.0.1:1243

Attributes

license_id
KG9K-EREW-WH2D-795M-PKWS
plugins_url
http://jbfrost.live/strigoi/server/?hwid=1&lid=m&ht=5
scheduled_task
true
secondary_startup
true
startup
true

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\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1980726966-773384374-2129981223-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0 = "\"C:\\Program Files\\Java\\jre1.8.0_66\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar\""	java.exe

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	java.exe

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/Job

T1053

pid	Process
1856	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 3436	1520	java.exe	92
PID 1520 wrote to memory of 3436	1520	java.exe	92
PID 1520 wrote to memory of 2776	1520	java.exe	89
PID 1520 wrote to memory of 2776	1520	java.exe	89
PID 3436 wrote to memory of 1856	3436	cmd.exe	93
PID 3436 wrote to memory of 1856	3436	cmd.exe	93

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\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1520
- 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\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar"
  2⤵
  - Drops file in Program Files directory
  PID:2776
- C:\Windows\SYSTEM32\cmd.exe
  cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3436
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar"
    3⤵
    - Creates scheduled task(s)
    PID:1856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

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

8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar

Path C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar
Size 67KB
SHA256 8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0
MD5 b855ca710ae11c6730584d08342243a4
SHA1 fd1b145fd8051e4df89c8437314854871e4c0dd4
SHA512 b56d7e8cd0811cd5b8171f651ccc4052a635202f4269654e8e2be924c425c44c94dc732d8e6e3796d79d1a430f9bd4ac742d4c816f1767ab6d9acffd6b5be6a8
SSDEEP 768:j2KCMNxETH27vqgMPRkr7keHenb3dc1qCzh9UGJpj6g/t0a58EppolxACCaMo7n0:SaETHqvqLkrF1qCjPp6g/Kq8rxuNIZW
MD5 SHA1 SHA512 SSDEEP

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90737d32e3aba4b.timestamp

Path C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
Size 50B
SHA256 d40f45120f0ad11fe4b87fa0846c70d84f01076ddd12130db37661fb42f98e6f
MD5 8514b8fb509d00d57d7b3c83b5bbc608
SHA1 cee575459ceaa7a257cd42fdecbaa8d125fa6d6e
SHA512 05569cccd89d62402a680c1b61239936dc95c06d6d832f2f482cdcbf9494389ea09452da9da89e422c2558fae1526c114c4965faa06d4fba6799413011c25c49
MD5 SHA1 SHA512

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8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar

Path C:\Users\Admin\AppData\Roaming\8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0.jar
Size 67KB
SHA256 8175d24d4aa6bf0021b5c4b7e1fd3941ce52b9f729e6af868d9ec2cf162874b0
MD5 b855ca710ae11c6730584d08342243a4
SHA1 fd1b145fd8051e4df89c8437314854871e4c0dd4
SHA512 b56d7e8cd0811cd5b8171f651ccc4052a635202f4269654e8e2be924c425c44c94dc732d8e6e3796d79d1a430f9bd4ac742d4c816f1767ab6d9acffd6b5be6a8
SSDEEP 768:j2KCMNxETH27vqgMPRkr7keHenb3dc1qCzh9UGJpj6g/t0a58EppolxACCaMo7n0:SaETHqvqLkrF1qCjPp6g/Kq8rxuNIZW
MD5 SHA1 SHA512 SSDEEP

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memory/1520-17-0x0000000003280000-0x0000000004280000-memory.dmp

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memory/1520-24-0x0000000003500000-0x0000000003510000-memory.dmp

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memory/1520-25-0x0000000003510000-0x0000000003520000-memory.dmp

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memory/1520-2-0x0000000003280000-0x0000000004280000-memory.dmp

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memory/1520-31-0x0000000003280000-0x0000000004280000-memory.dmp

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memory/1520-11-0x0000000002EC0000-0x0000000002EC1000-memory.dmp

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memory/2776-39-0x0000000003140000-0x0000000004140000-memory.dmp

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memory/2776-40-0x0000000001290000-0x0000000001291000-memory.dmp

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memory/2776-42-0x0000000001290000-0x0000000001291000-memory.dmp

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memory/2776-45-0x00000000033B0000-0x00000000033C0000-memory.dmp

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memory/2776-46-0x0000000003140000-0x0000000004140000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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