f2be302712cf964184b2817333fb2a30ddb27ce667af58228fbc0056fe0b360a

Analysis

max time kernel
49s
max time network
51s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
25/11/2022, 17:35

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General

Target

f2be302712cf964184b2817333fb2a30ddb27ce667af58228fbc0056fe0b360a.jar
Size

49KB
MD5

c083fea491f147194d3b90d4e48cfa49
SHA1

a5af55828ff27ea611e2eca3f19301297572ef7d
SHA256

f2be302712cf964184b2817333fb2a30ddb27ce667af58228fbc0056fe0b360a
SHA512

c6209ab3684de5e15a4f9a3f2c87d659f63635916945014df6adffdb5126a5bd8c0aaaaf529e5a94aeb922a1136b85bdffbec2cae1bc72cfc4b1104b3bf70f98
SSDEEP

768:9k6CTyR6z0gST8bwui6s0fSxHmB55j25d8jNiTMrHaKFj/ejtTOERqR:9k6C547T4wGsjFC5s5UNEs6KEjtCP

Score

8^/10

evasion persistence

Malware Config

Signatures

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1158

pid	Process
632	attrib.exe
1632	attrib.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\DOsW1fb3MJ = "\"C:\\Program Files\\Java\\jre7\\bin\\javaw.exe\" -jar \"C:\\Users\\Admin\\AppData\\Roaming\\BRMEuz4akD\\puyx8f9QIQ.txt\""	reg.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\BRMEuz4akD\Desktop.ini	attrib.exe
File created	C:\Users\Admin\AppData\Roaming\BRMEuz4akD\Desktop.ini	java.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\tem	java.exe
File opened for modification	C:\Windows\tem	java.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
524	reg.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1480	java.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 524	1480	java.exe	28
PID 1480 wrote to memory of 524	1480	java.exe	28
PID 1480 wrote to memory of 524	1480	java.exe	28
PID 1480 wrote to memory of 1632	1480	java.exe	30
PID 1480 wrote to memory of 1632	1480	java.exe	30
PID 1480 wrote to memory of 1632	1480	java.exe	30
PID 1480 wrote to memory of 632	1480	java.exe	29
PID 1480 wrote to memory of 632	1480	java.exe	29
PID 1480 wrote to memory of 632	1480	java.exe	29
PID 1480 wrote to memory of 1820	1480	java.exe	31
PID 1480 wrote to memory of 1820	1480	java.exe	31
PID 1480 wrote to memory of 1820	1480	java.exe	31

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
632	attrib.exe
1632	attrib.exe

C:\Windows\system32\java.exe
java -jar C:\Users\Admin\AppData\Local\Temp\f2be302712cf964184b2817333fb2a30ddb27ce667af58228fbc0056fe0b360a.jar
1⤵
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\system32\reg.exe
  reg add HKLM\Software\Microsoft\Windows\CurrentVersion\Run /v DOsW1fb3MJ /t REG_SZ /d "\"C:\Program Files\Java\jre7\bin\javaw.exe\" -jar \"C:\Users\Admin\AppData\Roaming\BRMEuz4akD\puyx8f9QIQ.txt\"" /f
  2⤵
  - Adds Run key to start application
  - Modifies registry key
  PID:524
- C:\Windows\system32\attrib.exe
  attrib +s +h +r "C:\Users\Admin\AppData\Roaming\BRMEuz4akD"
  2⤵
  - Sets file to hidden
  - Views/modifies file attributes
  PID:632
- C:\Windows\system32\attrib.exe
  attrib +s +h +r "C:\Users\Admin\AppData\Roaming\BRMEuz4akD\*.*"
  2⤵
  - Sets file to hidden
  - Drops desktop.ini file(s)
  - Views/modifies file attributes
  PID:1632
- C:\Program Files\Java\jre7\bin\javaw.exe
  "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\BRMEuz4akD\puyx8f9QIQ.txt"
  2⤵
  PID:1820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\BRMEuz4akD\Desktop.ini

Filesize
63B

MD5
e783bdd20a976eaeaae1ff4624487420

SHA1
c2a44fab9df00b3e11582546b16612333c2f9286

SHA256
2f65fa9c7ed712f493782abf91467f869419a2f8b5adf23b44019c08190fa3f3

SHA512
8c883678e4625ef44f4885b8c6d7485196774f9cb0b9eee7dd18711749bcae474163df9965effcd13ecd1a33cd7265010c152f8504d6013e4f4d85d68a901a80

Download Submit
C:\Users\Admin\AppData\Roaming\BRMEuz4akD\puyx8f9QIQ.txt

Filesize
49KB

MD5
c083fea491f147194d3b90d4e48cfa49

SHA1
a5af55828ff27ea611e2eca3f19301297572ef7d

SHA256
f2be302712cf964184b2817333fb2a30ddb27ce667af58228fbc0056fe0b360a

SHA512
c6209ab3684de5e15a4f9a3f2c87d659f63635916945014df6adffdb5126a5bd8c0aaaaf529e5a94aeb922a1136b85bdffbec2cae1bc72cfc4b1104b3bf70f98

Download Submit
memory/1480-54-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

Filesize
8KB

Download
memory/1480-64-0x00000000020E0000-0x00000000050E0000-memory.dmp

Filesize
48.0MB

Download
memory/1820-82-0x00000000020A0000-0x00000000050A0000-memory.dmp

Filesize
48.0MB

Download
memory/1820-83-0x00000000020A0000-0x00000000050A0000-memory.dmp

Filesize
48.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads