309015b766fa379cdf3ff5082854403334fff56c1cfe1ab9e2de40a06773a915

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 03:27

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General

Target

2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe
Size

63KB
MD5

179d3282117255a548bd761c83d8d73f
SHA1

60e6057f2e081134836d0bd84e46375e8c4e41ff
SHA256

309015b766fa379cdf3ff5082854403334fff56c1cfe1ab9e2de40a06773a915
SHA512

fb39c5374b4f0b18458c4fc63919093da62cabbdfa95b87339a209f92136bcc9e270b651d3efd153ba17f83c4475b70dc01f191105f8d11f6037dd50d193ce8f
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxO:btng54SMLr+/AO/kIhfoKMHdPO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012330-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2528	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1508	2024-04-26_179d3282117255a548bd761c83d8d73f_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
1508	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe
2528	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1508 wrote to memory of 2528	1508	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	28
PID 1508 wrote to memory of 2528	1508	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	28
PID 1508 wrote to memory of 2528	1508	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	28
PID 1508 wrote to memory of 2528	1508	2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_179d3282117255a548bd761c83d8d73f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1508
- 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:2528

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
63KB

MD5
15015535bd2cda369afbb05f48e9fbeb

SHA1
2819163913de2fd32d1eea243ad8da627f9ae24c

SHA256
bfff6d9d99fdf273333666ccf161f1ad19e61dee843fc400d101bf116fb0dd8b

SHA512
4eb604b7bd142b6ebddc72a87e8872842c0a09b5a62e8ab3a54c4b01b6a46f4ca55ee8544a01ba981dff6b5f5ed723a90bd619e4efe92eb8dcdb3e93b23a42d4

Download Submit
memory/1508-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1508-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1508-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2528-17-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download