4720d02b47e857682064192b8588d2aeedd2c912529fd696bb872ee9226268ef

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
03-05-2024 05:51

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General

Target

2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe
Size

40KB
MD5

a55dfb700a459c4b2a0f8c3d0751b2b3
SHA1

bb921967878d16507363e79805b8a1f8af19d4dc
SHA256

4720d02b47e857682064192b8588d2aeedd2c912529fd696bb872ee9226268ef
SHA512

f3d3b602b2922ed8f629e234af49dc3307d7eed0d323bf9f72208d70ac45f8befa86f4aabf2d7ffd39aac0903f894c37263de4cf76313186d8c07b93c0ffe3b5
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Ez:btB9g/WItCSsAGjX7e9N0hunKLYY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000015cbd-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2368	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_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
1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe
2368	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 2368	1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe	28
PID 1512 wrote to memory of 2368	1512	2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_a55dfb700a459c4b2a0f8c3d0751b2b3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1512
- 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:2368

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

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

Filesize
40KB

MD5
2da95d51aa4a01fe05ad8f208dff40bd

SHA1
2bbcb9a60fefd91513f6291b29c0f7bdd9ed54c1

SHA256
51ef78389b1e5d645dc728e20282a68be6c2b968125cae8f878fface7c053c96

SHA512
aed0c4eeeefc5aa2df09f6c91a489e7c86c86b98d105091ee3e27516a78ce30544613e0a2e16313a594fd178391f91a96addde2e87d11ab6aa7a70339d14473a

Download Submit
memory/1512-8-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/1512-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1512-0-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2368-23-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download