b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad

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
21/04/2024, 01:49

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General

Target

b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad.exe
Size

3.7MB
MD5

c199e985dbbec6c53f8c8539050aea30
SHA1

7b8580f8bb722d69409aaacd512b133f42a68c6f
SHA256

b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad
SHA512

de5475c650d37a59b37dcbba580fd90ff0d4a3b1c995d8d69dfb0678645114f54738e4d4e5ed21ac75d1b99f08eb395146e2a9675c82f9ab124694984821f77d
SSDEEP

49152:31akMEEnoAXaLetR9wLm7dEgHghWvU+H/TfgKfiKXHoFcI13+mr2LFIIp:QkMEEULetUm6hhMTgfUoz13x2GIp

Score

9^/10

persistence

Malware Config

Signatures

Detects executables packed with VMProtect. 5 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000000400000-0x00000000009A5000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/2076-1-0x0000000000400000-0x00000000009A5000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/files/0x000900000001441e-7.dat	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/1100-9-0x0000000000400000-0x00000000009A5000-memory.dmp	INDICATOR_EXE_Packed_VMProtect
behavioral1/memory/1100-10-0x0000000000400000-0x00000000009A5000-memory.dmp	INDICATOR_EXE_Packed_VMProtect

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
1100	tbckyxk.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\PROGRA~3\Mozilla\tbckyxk.exe	b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad.exe
File created	C:\PROGRA~3\Mozilla\newtrln.dll	tbckyxk.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2076	b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad.exe
1100	tbckyxk.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2064 wrote to memory of 1100	2064	taskeng.exe	29
PID 2064 wrote to memory of 1100	2064	taskeng.exe	29
PID 2064 wrote to memory of 1100	2064	taskeng.exe	29
PID 2064 wrote to memory of 1100	2064	taskeng.exe	29

C:\Users\Admin\AppData\Local\Temp\b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad.exe
"C:\Users\Admin\AppData\Local\Temp\b211c08cf3a7f5f5711367addaa868a36f3a3b848b22331a86b379cd748271ad.exe"
1⤵
- Drops file in Program Files directory
- Suspicious use of UnmapMainImage
PID:2076

C:\Windows\system32\taskeng.exe
taskeng.exe {19F93AAD-5AF1-472A-BBA9-6006DBF6AEAD} S-1-5-18:NT AUTHORITY\System:Service:
1⤵
- Suspicious use of WriteProcessMemory
PID:2064
- 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:1100

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
3.7MB

MD5
34db842e7eebaa1975843c228c7d67c9

SHA1
79b9b1b2a0469324bddf6b04589c826bf089c52a

SHA256
e744d445b832eb29256dc612a2195c0da1f074c86d010dbea4c7970a816b6c60

SHA512
a9345a6148387166dd1dfb2ff546416fa11e72e09055047d9755964616259dea89b015b3331c377fa1b5c22a92237c5d86146b31ef9a723a2c95b19e195969cd

Download Submit
memory/1100-9-0x0000000000400000-0x00000000009A5000-memory.dmp

Filesize
5.6MB

Download
memory/1100-10-0x0000000000400000-0x00000000009A5000-memory.dmp

Filesize
5.6MB

Download
memory/1100-11-0x00000000009B0000-0x0000000000A0C000-memory.dmp

Filesize
368KB

Download
memory/1100-12-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/1100-14-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2076-0-0x0000000000400000-0x00000000009A5000-memory.dmp

Filesize
5.6MB

Download
memory/2076-1-0x0000000000400000-0x00000000009A5000-memory.dmp

Filesize
5.6MB

Download
memory/2076-2-0x0000000002140000-0x000000000219C000-memory.dmp

Filesize
368KB

Download
memory/2076-3-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download
memory/2076-6-0x0000000002140000-0x000000000219C000-memory.dmp

Filesize
368KB

Download
memory/2076-5-0x0000000000400000-0x000000000045B000-memory.dmp

Filesize
364KB

Download