67ba0d747857c0be4a00c748021e29fbcf4aab5dc69fcea537c1de9e017f9be2

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12-03-2024 20:31

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General

Target

2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe
Size

64KB
MD5

5b80945f0c42ebe8c837c3ca81dfb42e
SHA1

d43be3427c7b698dcd0bcec85c91172bd67f36b2
SHA256

67ba0d747857c0be4a00c748021e29fbcf4aab5dc69fcea537c1de9e017f9be2
SHA512

92a64b23f281853fab1117edb6e6fd61bf1b0a49c27682a2162b1d1ca348fd3b6c43c2cef8f88aae902daa0699cfeb02eee0d65bdde1bef80f22b30119658feb
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012254-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012254-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2688	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_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
2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe
2688	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2760 wrote to memory of 2688	2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe	28
PID 2760 wrote to memory of 2688	2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe	28
PID 2760 wrote to memory of 2688	2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe	28
PID 2760 wrote to memory of 2688	2760	2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_5b80945f0c42ebe8c837c3ca81dfb42e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2760
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2688

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\hurok.exe

Filesize
65KB

MD5
516c8274d2dff463d721e7ba943e915d

SHA1
90e43b9a474b1c16a8cbf55854d8d5fcc3242e1b

SHA256
1abfcd37fae98c947b3f682c2eac926f9fb8cd39a0df2d4092664ebd7e64af55

SHA512
9bf0de17e1eeb35596859cb29fb97fd75dc9aff06ee2de1b869f0040d54c040784904734bf8f84cea4188b5c0e6c4ac79ff0f5e233819ce021ac91410876ab45

Download Submit
memory/2688-19-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2760-0-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2760-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2760-2-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download