db41e94b4640a31fec4f806a3bada4472f25b3a41bc41223315eab5a31819f63

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
21-02-2024 11:50

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General

Target

2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe
Size

35KB
MD5

f5ac67634e94d72a49854a8e9c8af27b
SHA1

a24e57dea81d7df9a280b03d836c914e383eb168
SHA256

db41e94b4640a31fec4f806a3bada4472f25b3a41bc41223315eab5a31819f63
SHA512

9d98a1588ba173c4647264f039222e6416cf1ed566ccc2f441af124eb4a49e506cf89cb1457bae088c5ead43efe9a85095fa1dd6f58e3449a3ae1000577fa842
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmkh:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012243-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012243-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2776	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_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
1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe
2776	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1112 wrote to memory of 2776	1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe	28
PID 1112 wrote to memory of 2776	1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe	28
PID 1112 wrote to memory of 2776	1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe	28
PID 1112 wrote to memory of 2776	1112	2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_f5ac67634e94d72a49854a8e9c8af27b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1112
- 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:2776

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
35KB

MD5
1002cd72f04cdc8954f595746b9ea2fd

SHA1
3a61a0276b0efc0ca9860d08415ba737a9be8f84

SHA256
4f5811f1d0bf5d08a26aa7c5b402865209974d7c8c5b33e12de0f402017b9db5

SHA512
a2af4faf097f845fc9a7448925afcbc51000f2a360d6061294de089cdde14bcb14517b142acbe4e72aa308b656027e1df7465d2c540c8fe5bb6941fd9ede0eaf

Download Submit
memory/1112-0-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1112-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1112-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2776-20-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download