18031f53be21379ff77997b346ff1b6f2378e825d441723150a46e88bfde8a88

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-02-2024 12:32

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General

Target

2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
Size

35KB
MD5

622b03e6452238446095906ec7a6d76c
SHA1

1ce4e6d8db531eb649a9ed912e5134ab3b7b2f8c
SHA256

18031f53be21379ff77997b346ff1b6f2378e825d441723150a46e88bfde8a88
SHA512

77c97e292084c9bf18846f09d3f9f6d9da34b9a0dff32e90327f56bc20b1142efa8e0d96302e18b32dd0d6ad8175ef69c342e7b5a0d6f149003361496b4bfe2a
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg1831:btB9g/WItCSsAGjX7e9N7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001225a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1936	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
1936	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 1936	1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	28
PID 1536 wrote to memory of 1936	1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	28
PID 1536 wrote to memory of 1936	1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	28
PID 1536 wrote to memory of 1936	1536	2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_622b03e6452238446095906ec7a6d76c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
35KB

MD5
9738fb830988dc2459f1626c323378d3

SHA1
1009aa15f2652731b884d733aee00675b5dcd608

SHA256
37f55088cb8d372c72d64f9a44ad139dd4ef6fdd4536fa516769c0a9d0b51052

SHA512
5667392952c8860327a2b11b0e20e7fab9e1c77ed39b7912ae214b22197b90482fabb9b768d89d29f59f95e5df8f5bd2f6187a3bfd7cd01bcf67a33efc7e5419

Download Submit
memory/1536-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1536-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1536-1-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1936-18-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download