d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 15:42

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General

Target

2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
Size

68KB
MD5

acfdf5809a6dadc684947ff3af9bb81a
SHA1

d977194d6f342ab42c8290c803be60315b90375b
SHA256

d09150c8e0bb5c305c5b9ba58446eb16b0d15b77d7e70f9b540aa4063d8b8691
SHA512

e474f432292edbf7e962747ed24835b76a650ae58c223707386da4aa738d43e0f1d27b3bb4295243f2b47c9ae50657c83c774ca7770590c53e0625bb28124c41
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLEk:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000014698-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000014698-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2540	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_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
3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
2540	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2540	3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	28
PID 3008 wrote to memory of 2540	3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	28
PID 3008 wrote to memory of 2540	3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	28
PID 3008 wrote to memory of 2540	3008	2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_acfdf5809a6dadc684947ff3af9bb81a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3008
- 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:2540

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
68KB

MD5
5a9c8cc6628de759b72f1123f462c2ac

SHA1
f634037ec726e680a39e25e8c4fd38f29ea3b941

SHA256
2e09fa541af4ac44b7f357ea9fe70605b00e32e314a8ceedb13f1384c2d5528e

SHA512
6baed324d487091b92f267cc2e09cf2c22cf01e067d2e3126eca71f43c33d9d988d1f326c03b1e83c183b1210b5f408389714885565941bbabf4cbe47eb0f7a1

Download Submit
memory/2540-16-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3008-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/3008-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/3008-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download