f3ef95e8b7573e5a6355d203da93a7fd27bf9305d122136cfb4bfb1222d6be02

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
23/01/2024, 22:24

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General

Target

2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe
Size

61KB
MD5

31fd3f6d2ebf8adf4f0191b4e8a1785e
SHA1

eae6b09e1674cfd0943fe4aceed7ec8dc2e1f27a
SHA256

f3ef95e8b7573e5a6355d203da93a7fd27bf9305d122136cfb4bfb1222d6be02
SHA512

751e85572e6949a228832cce7aa39081e1f774aa10d2cd88dc32ad0b183a34de8856b2fc6a5447c9861f21e6f55898382475f392b562089ceb681837002dbeb2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299K:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012243-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012243-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2404	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_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
2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe
2404	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 2404	2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe	28
PID 2188 wrote to memory of 2404	2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe	28
PID 2188 wrote to memory of 2404	2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe	28
PID 2188 wrote to memory of 2404	2188	2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_31fd3f6d2ebf8adf4f0191b4e8a1785e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2188
- 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:2404

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
61KB

MD5
79e06c8aa7d9c8340bc94ed931f26c65

SHA1
fabadcc8bf9e92dc341ad4bec8a893d20dda0497

SHA256
65e7c199245b7c24367d4582237b53f69134277b32b6fb501df9d8b9c538005f

SHA512
d1f00b5e94145ec79c609fde59f4b66a5221462fb9e02775805a6fd4801d0b4a804f72374249d78eca3139d3083981957a64933fd650e196a4fc81fdf19b26ef

Download Submit
memory/2188-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2188-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2188-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2404-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download