4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/05/2024, 21:34

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General

Target

4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188.exe
Size

466KB
MD5

138f999c13685a126f4beda2706db481
SHA1

164add112a94b28dc55a6fc5150eeaa6130b7f54
SHA256

4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188
SHA512

473fd2a2c954c0074af3ff455ac9b488e9cbc384e0680169ad644b365e228d431aa16a856abd72d14eb6d4a73e1a48e142944afbaf3944cf0af1ed146eb2d27d
SSDEEP

6144:744b7czqmlKa08qvFsRcIk0NLtS1WkrFdxqbEuIGPeRje:E4fiQvlvy3LtCWuboEyB

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 2 IoCs

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000400000-0x000000000045F000-memory.dmp	UPX
behavioral1/files/0x002f0000000146e6-5.dat	UPX

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
2172	gjsfhjk.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000400000-0x000000000045F000-memory.dmp	upx
behavioral1/files/0x002f0000000146e6-5.dat	upx
behavioral1/memory/2172-7-0x0000000000400000-0x000000000045F000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\gjsfhjk.exe	4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188.exe
File created	C:\PROGRA~3\Mozilla\eurgebe.dll	gjsfhjk.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1984	4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188.exe
2172	gjsfhjk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2728 wrote to memory of 2172	2728	taskeng.exe	29
PID 2728 wrote to memory of 2172	2728	taskeng.exe	29
PID 2728 wrote to memory of 2172	2728	taskeng.exe	29
PID 2728 wrote to memory of 2172	2728	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188.exe
"C:\Users\Admin\AppData\Local\Temp\4d67058746e6da0dbc186166ea9239b2549bdd40d1d16fc4125c1a8c65fdc188.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:1984

C:\Windows\system32\taskeng.exe
taskeng.exe {C6C86307-29E2-472F-9EBD-12F10760FBBA} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2728
- C:\PROGRA~3\Mozilla\gjsfhjk.exe
  C:\PROGRA~3\Mozilla\gjsfhjk.exe -tuxiydl
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:2172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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\gjsfhjk.exe

Filesize
466KB

MD5
f31a2497dc408ece16d210d6b3c9d178

SHA1
eaa34fb5dc755e86b3a176a6ca4fb93434d8d038

SHA256
28760cef952a9315298682c6a59d9be7a930407ec8774491291cb6fcbd5f1fdf

SHA512
75fdcd93418bc1cddbd986e3b9a5991bb3c97f1f669c455b2a6c9807667ce5ee4885c468f53d4eecbbae9b3c63b0ed9af8a59471e63ccb4f3f26575372e2847f

Download Submit
memory/1984-0-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/1984-1-0x0000000000270000-0x00000000002CB000-memory.dmp

Filesize
364KB

Download
memory/1984-2-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1984-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2172-7-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/2172-9-0x0000000000460000-0x00000000004BB000-memory.dmp

Filesize
364KB

Download
memory/2172-8-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2172-11-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download