33366c3e7ad5b3c974c0b5a2c44f5c8e62ac6aaf1a4e90c5765df27bb78a5920

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 23:30

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General

Target

2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe
Size

43KB
MD5

3f38e0917081e2dee8b2121556203b7d
SHA1

520d3a55ddd45a7b7e32f266a8d7bc4d9783d8e9
SHA256

33366c3e7ad5b3c974c0b5a2c44f5c8e62ac6aaf1a4e90c5765df27bb78a5920
SHA512

123b0fc4fe59e0278496e6717a93acb63d3a28ac6202b21d203f2b969a0e00e72d5ee7cfdd4aa00fe27797b1401a71539bfaf5240e66f1e06b9742daa5a7bf9f
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJPCh:btB9g/xtCSKfxLIc/y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001222a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2148	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_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
1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe
2148	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 2148	1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe	28
PID 1984 wrote to memory of 2148	1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe	28
PID 1984 wrote to memory of 2148	1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe	28
PID 1984 wrote to memory of 2148	1984	2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_3f38e0917081e2dee8b2121556203b7d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1984
- 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:2148

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
43KB

MD5
7ae62be9ac36c504c8f344fb20014295

SHA1
dede091d3d4ee28a6a6aa580e92a45d1f209d0ca

SHA256
2fdce8f321857a3f121b897e575544ab9a0f520363d3bf3557438d4b397e2c0a

SHA512
ee7d406b0df69acb07fbeb25036e8eacdb3ab3ce890a6a33a26c3b4d9fa9b5ea2aac4a39082223f0567fafaa91e4ed05b4cea8de9aac83be8ebeabd0242b2854

Download Submit
memory/1984-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1984-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2148-23-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download