077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 17:21

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General

Target

077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb.exe
Size

137KB
MD5

4525e64f5328bdb452c0729e30fa7b6b
SHA1

236d4266fe130988f9a9bb96b4f3e505926d1399
SHA256

077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb
SHA512

e620047b039c15a5381f331bf349acd27cc9cb7fa2206e6662a80cdada8306ec6c36fe07ee1d163a582c2660e1c09144d5becfdf6657232103aaf5890a853701
SSDEEP

3072:AE9ByF5wP7Ht99mbaa+vKAzWvSVJSwpi6Ds2:7907wTr9mea+i6WKQu

Score

9^/10

aspackv2 persistence

Malware Config

Signatures

Detects executables packed with ASPack 5 IoCs

resource	yara_rule
behavioral1/memory/1664-0-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral1/memory/1664-1-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral1/memory/1664-2-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_EXE_Packed_ASPack
behavioral1/files/0x0020000000014fe1-8.dat	INDICATOR_EXE_Packed_ASPack
behavioral1/memory/2916-10-0x0000000000400000-0x000000000045E000-memory.dmp	INDICATOR_EXE_Packed_ASPack

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x0020000000014fe1-8.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
2916	tbckyxk.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\tbckyxk.exe	077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb.exe
File created	C:\PROGRA~3\Mozilla\newtrln.dll	tbckyxk.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1664	077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb.exe
2916	tbckyxk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2532 wrote to memory of 2916	2532	taskeng.exe	29
PID 2532 wrote to memory of 2916	2532	taskeng.exe	29
PID 2532 wrote to memory of 2916	2532	taskeng.exe	29
PID 2532 wrote to memory of 2916	2532	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb.exe
"C:\Users\Admin\AppData\Local\Temp\077c87a5c026f03db25d6c3da7cf2ef2ea328132055e06cfd0eb70ad56ee3bbb.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:1664

C:\Windows\system32\taskeng.exe
taskeng.exe {715C2B8C-FAF5-4E97-BAB7-D07B04A4C709} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2532
- C:\PROGRA~3\Mozilla\tbckyxk.exe
  C:\PROGRA~3\Mozilla\tbckyxk.exe -gqpcbye
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - Suspicious use of UnmapMainImage
  PID:2916

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\tbckyxk.exe

Filesize
137KB

MD5
3dcf34ed8f19576e5a7858b2cc126d9c

SHA1
75d35a663de0253cfa92530780755496283c2466

SHA256
62bae230516d405e8d300f76ee4959b298c49fd0671530fdc1f01a7510f7a588

SHA512
86425c7a09d17b242271cb5659573cef889c72513df5a75b7d47fd17f8a7027ef1da523bb3abc572132cc9927eff07618ee3c0718b7de8b5bb2a380327b71e6a

Download Submit
memory/1664-0-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1664-1-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1664-2-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1664-3-0x0000000000320000-0x000000000037B000-memory.dmp

Filesize
364KB

Download
memory/1664-4-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1664-6-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1664-7-0x0000000000320000-0x000000000037B000-memory.dmp

Filesize
364KB

Download
memory/2916-10-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2916-13-0x0000000000260000-0x00000000002BB000-memory.dmp

Filesize
364KB

Download
memory/2916-14-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2916-16-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download