35d58fb6634c5d0b928d663f434405c7e0b031dc852196cae1183a92f1ac941b

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-03-2024 07:34

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General

Target

2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe
Size

63KB
MD5

820f53653a1df82cdd80ca4b62185e45
SHA1

abbbe2ce77118efa9bc08496f962a8ee7b037093
SHA256

35d58fb6634c5d0b928d663f434405c7e0b031dc852196cae1183a92f1ac941b
SHA512

d06e0ac3392572c8ab796bbf4294cd2abbc2c957ab91a741b90840bf4ba30a0ac5c30165c678a94b7b5804535171ca9ace6d10e78021eba185a7f2b9c1911c4b
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGM:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012248-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012248-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2104	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-03-15_820f53653a1df82cdd80ca4b62185e45_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	2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe
2104	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2848 wrote to memory of 2104	2848	2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe	28
PID 2848 wrote to memory of 2104	2848	2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe	28
PID 2848 wrote to memory of 2104	2848	2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe	28
PID 2848 wrote to memory of 2104	2848	2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_820f53653a1df82cdd80ca4b62185e45_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2848
- 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:2104

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
63KB

MD5
f8d43fbb0305fa6ac5deb0da2c367140

SHA1
a6e01dc8fd09a28511594ae787632bb5a4752818

SHA256
cb158adace818470304b658804f514e848a5c5fabdbbd7b736507b7213c44dd6

SHA512
e4c5c7672b54c4ec7a1f6052b3e25e7f89c24cc39c6d88c8d9a6791f2e758c1bf64ae294715f970145a8a64bb0c4b57d5d0d21874ae0303450702882679fc3f8

Download Submit
memory/2104-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2848-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

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

Filesize
24KB

Download
memory/2848-7-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download