658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8

Analysis

max time kernel
45s
max time network
59s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
06/11/2022, 08:40

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General

Target

658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8.exe
Size

237KB
MD5

3167332b3f865c3dfe7102c12bf7626f
SHA1

2d70835e267a551c4079faa4a0d4033a4c46ad92
SHA256

658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8
SHA512

fb4bce838d826e0e871661e350022075c48399185e355a974f8c9a7a0405cdf94b9b104032a337e8f83ebac4dd6764036f1cded61f2c5fe51b9828c8c4f875f8
SSDEEP

3072:JaZActViGCunMhuX01ln8vzo+C4EozGUp12ZbrImlKR6e2zAb:JaacfiGCuX01l8vzCoTpMZZe2zw

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1532	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	658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8.exe
File created	C:\PROGRA~3\Mozilla\segfnra.dll	jjruejn.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1464	658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8.exe
1532	jjruejn.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1212 wrote to memory of 1532	1212	taskeng.exe	28
PID 1212 wrote to memory of 1532	1212	taskeng.exe	28
PID 1212 wrote to memory of 1532	1212	taskeng.exe	28
PID 1212 wrote to memory of 1532	1212	taskeng.exe	28

C:\Users\Admin\AppData\Local\Temp\658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8.exe
"C:\Users\Admin\AppData\Local\Temp\658b8c658ddd89cf33c381bb6568d034dcdbb4e4362292fdd8319503fd4f8fe8.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:1464

C:\Windows\system32\taskeng.exe
taskeng.exe {437C3836-1C6C-41A2-9274-AB0DB41FF0A0} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- 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:1532

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
237KB

MD5
c45bf474c6e9179a579bdedc1807d9c0

SHA1
8bf26084c777750ce024f17ce8068792bfcfd81a

SHA256
0ec701fc20d83caac119d9872395cc66c62fbc70287933e90abd2cb268e19b83

SHA512
0ae23d7679285f40ea9e436dd543c48fd2b69d41cf9fdf17d813ee18f50c02bedbeb86da82e9e3f2a9cf23ae2a9fc4d736d001104cc55b730a64ab9017dae09f

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

Filesize
237KB

MD5
c45bf474c6e9179a579bdedc1807d9c0

SHA1
8bf26084c777750ce024f17ce8068792bfcfd81a

SHA256
0ec701fc20d83caac119d9872395cc66c62fbc70287933e90abd2cb268e19b83

SHA512
0ae23d7679285f40ea9e436dd543c48fd2b69d41cf9fdf17d813ee18f50c02bedbeb86da82e9e3f2a9cf23ae2a9fc4d736d001104cc55b730a64ab9017dae09f

Download Submit
memory/1464-54-0x00000000758B1000-0x00000000758B3000-memory.dmp

Filesize
8KB

Download
memory/1464-55-0x0000000000330000-0x000000000038B000-memory.dmp

Filesize
364KB

Download
memory/1464-56-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1464-57-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1532-62-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download
memory/1532-63-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1532-64-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download