763eb1caca66418946b7a073d36c2582369be78e176bd97a7246bfec29889125

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/03/2024, 12:48

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General

Target

2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe
Size

34KB
MD5

7e39dc4026906543a589eec03e03e842
SHA1

34f36cf123cf45eb5b735ac58ad3a6308f14541e
SHA256

763eb1caca66418946b7a073d36c2582369be78e176bd97a7246bfec29889125
SHA512

916119a04f0c60f7df66f341ba01abc074e8a79900f3d3599f068e929901107e074573c4922692fa0eb3f7397c8c5c5897866708bebecc24c76ef8408ee82a02
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kbg8:b7o/2n1TCraU6GD1a4Xt9bRU6zAx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012253-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2532	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-03-25_7e39dc4026906543a589eec03e03e842_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
2848	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe
2532	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2532	2848	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	28
PID 2848 wrote to memory of 2532	2848	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	28
PID 2848 wrote to memory of 2532	2848	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	28
PID 2848 wrote to memory of 2532	2848	2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_7e39dc4026906543a589eec03e03e842_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2532

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\rewok.exe

Filesize
34KB

MD5
e3ddf393c3fc0fcac6795de0713a99ee

SHA1
e806593d9cd8ccb436c80228d11a4194a3bd9e8b

SHA256
49a43e6a12ed6cf65a81c190e5e5bf1cf8f749a61b09c2020b54a52b1c1a1143

SHA512
efa92e2764728a8da78e67f3524ed1e36d1532140a308bde8eb233fdb59262e2756bbe77d2093e7ae83514c42e7f9a86c6d43e5d494544bc528ea997c295fbf5

Download Submit
memory/2532-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2848-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2848-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2848-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download