b0451da6fe0ea8d2dd931e203b9cabbc5cecdeddc7562c67803cb16bfc653158

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 03:27

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General

Target

2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
Size

48KB
MD5

3bfd8b21a50c467c67784cbe9fae448b
SHA1

7e1461d78fa167d5276bf7d64ed4fe6de8d002aa
SHA256

b0451da6fe0ea8d2dd931e203b9cabbc5cecdeddc7562c67803cb16bfc653158
SHA512

fdfb85e7c9c414c0e83125ad6b8b6edc3b65010e3ffe1aa54738808b549f161631a73c4387a025a705b8852698b2c2d55e2142a3f7446a2fae5a032d2d4524f3
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAID:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012262-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012262-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2128	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_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
2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
2128	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2128	2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	28
PID 2224 wrote to memory of 2128	2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	28
PID 2224 wrote to memory of 2128	2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	28
PID 2224 wrote to memory of 2128	2224	2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_3bfd8b21a50c467c67784cbe9fae448b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2224
- 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:2128

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
48KB

MD5
da3faf22af078f6865341bab8bd4f166

SHA1
b935ad0cfbde907d94480c7c5b39f172ca58915a

SHA256
97f2c339f90cf344d73cfb544283db73917903abce93eee0ce0a0f92524bd019

SHA512
42ecebcc358955641328dc4866b84d9f33ecfc0e9b40435dd9c4e76fb554abf99ad26551f0777c8dad8aef8b56cd3a422eacba5ed359e749930230bc8e6d0075

Download Submit
memory/2224-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2224-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2224-5-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download