0966d1d90f52a1f45cb942233720bfa1850fc4bcf0957dd102cf2ab27e1137e9

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/02/2024, 09:25

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General

Target

2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe
Size

43KB
MD5

15a43bba0f3056953f6878cfd1c99218
SHA1

29c29a060feacb949232ff11889360a602048fd9
SHA256

0966d1d90f52a1f45cb942233720bfa1850fc4bcf0957dd102cf2ab27e1137e9
SHA512

10e27c40a35c2dbcacc0f8721b6404f7be3a490a65b03c6e4e87b64974104a5769fa475c491f671358f6b554e42bc645b367acbdce947f991b54da7b40566bc5
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxx:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012328-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000012328-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2368	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_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
1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe
2368	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 2368	1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	28
PID 1940 wrote to memory of 2368	1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	28
PID 1940 wrote to memory of 2368	1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	28
PID 1940 wrote to memory of 2368	1940	2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_15a43bba0f3056953f6878cfd1c99218_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1940
- 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: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

\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
43KB

MD5
2ed19960718c0d5577bbfdfbb7d9e5df

SHA1
ab9c38f5b197d4a187d20e97c1a3016fcf242e3e

SHA256
cd38b71db4b6857dfb1478bcf54805c23b49822ea5417eb7c338016b0adae061

SHA512
34529253a0e26511c6921fd42ba315f999bbdf513d3bd4a19b4e83a35f62ad14bea79bb207c712641bf1e14947ae717e552d90851700a343e0a2e57a4e60bdec

Download Submit
memory/1940-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1940-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1940-1-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2368-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download