8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7

Analysis

max time kernel
45s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
05/12/2022, 12:58

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General

Target

8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7.exe
Size

218KB
MD5

301c3b9d648bfd46e0d39a4b263adac0
SHA1

f948b04033e8aebc67d25475e182b43f79ebdb5b
SHA256

8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7
SHA512

f58f69b21e02ae6339b47739287ec0e5e38a749bcf291e51dc2850fbf97ac26a647df536fcbb88db31bf48fe7c569b30ea49af49962157e133a30a4b35b26bff
SSDEEP

3072:CcMNMs6pTpZlxROvGLvrIgoEBm4TVNxZIa+6HQB4MnOOOOygsTVSIUKXs5L:lM2l7jLvrSkZVjwtOOOOy5SIa5L

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
276	jjruejn.exe

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\jjruejn.exe	8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7.exe
File created	C:\PROGRA~3\Mozilla\segfnra.dll	jjruejn.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1252	8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7.exe
276	jjruejn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 276	2040	taskeng.exe	28
PID 2040 wrote to memory of 276	2040	taskeng.exe	28
PID 2040 wrote to memory of 276	2040	taskeng.exe	28
PID 2040 wrote to memory of 276	2040	taskeng.exe	28

C:\Users\Admin\AppData\Local\Temp\8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7.exe
"C:\Users\Admin\AppData\Local\Temp\8b4cd6efc75e9e1c2d6581daec33212f82239e28429996f3d19e61a1254ed3f7.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:1252

C:\Windows\system32\taskeng.exe
taskeng.exe {A2E7C844-B589-43EE-9421-D1CFC30B60C9} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\PROGRA~3\Mozilla\jjruejn.exe
  C:\PROGRA~3\Mozilla\jjruejn.exe -npivonl
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~3\Mozilla\jjruejn.exe

Filesize
218KB

MD5
160f6bb55f44a0102971d0effd19ab8d

SHA1
ddffb4572f861b92f7b02ed6122aa75d1eb11fad

SHA256
f1b2e51e4deb381e92e98f0aa7f9911468906434184c60c8c47c704d6a0fcb57

SHA512
f50b5e2e9c424f56e87220c0f4c066d36f8f05646cee154d65fc59fb769319a2110532bee0bd4b1f7b52f7edbfb916b6992f3be4307c52d909182ace83f68a20

Download Submit
C:\PROGRA~3\Mozilla\jjruejn.exe

Filesize
218KB

MD5
160f6bb55f44a0102971d0effd19ab8d

SHA1
ddffb4572f861b92f7b02ed6122aa75d1eb11fad

SHA256
f1b2e51e4deb381e92e98f0aa7f9911468906434184c60c8c47c704d6a0fcb57

SHA512
f50b5e2e9c424f56e87220c0f4c066d36f8f05646cee154d65fc59fb769319a2110532bee0bd4b1f7b52f7edbfb916b6992f3be4307c52d909182ace83f68a20

Download Submit
memory/276-62-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download
memory/276-63-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/276-64-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1252-54-0x0000000074DE1000-0x0000000074DE3000-memory.dmp

Filesize
8KB

Download
memory/1252-55-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download
memory/1252-56-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1252-57-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download