78d1c6a75723b8b1ff62094f6153265a6e6fbf8a8c061ff36509923a55f5e5ed

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
22-02-2024 12:57

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General

Target

2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe
Size

35KB
MD5

b545c14bf1b8d3ca18769d6bd5b8e506
SHA1

b4cb11986bc1c7bcd4ccfb1a94ffd68930fc61b6
SHA256

78d1c6a75723b8b1ff62094f6153265a6e6fbf8a8c061ff36509923a55f5e5ed
SHA512

ef869bfe1fb8bc43cfe057c653ab566ff2060415bf536c005be366f391bb63a53ef65398c9caa558744c53d6cf91ae9ca1ef8816793bc0b1d9ed9b170fa750b7
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiA0jgg183z:btB9g/WItCSsAGjX7e9Nd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012255-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2640	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_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
2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe
2640	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2640	2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe	28
PID 2224 wrote to memory of 2640	2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe	28
PID 2224 wrote to memory of 2640	2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe	28
PID 2224 wrote to memory of 2640	2224	2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_b545c14bf1b8d3ca18769d6bd5b8e506_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2224
- 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:2640

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
36KB

MD5
4cd5a0ef3095f3934a4ff8a894540e03

SHA1
b84c289ecbd0718cb7a1f3075e34d715b5ccd295

SHA256
4a94212409f60d48d80ff9647e4def8014f8031bb2e6a43cc3fc9a9c74194e08

SHA512
ff8343fd75e65ddeb449438a087aa30386106230bc29b148378cdfa478b538f5c277f8a472bfb03783423b21345643b081fcc3b01cc982f8d741c6a06a9d5152

Download Submit
memory/2224-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2224-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2224-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2640-23-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download