a15c401ff90e5afdf2df2197b2c73e4e6e1e1311199980cfe4e18dca1ad40c14

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
13/06/2024, 00:59

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General

Target

2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe
Size

44KB
MD5

fa940e66ad9a302fd6281d2e1082b5d1
SHA1

d6ea3e91dcd073e66ee40f97b6de536bd667e5a4
SHA256

a15c401ff90e5afdf2df2197b2c73e4e6e1e1311199980cfe4e18dca1ad40c14
SHA512

f96e61a3c2b7d94589a7fcd977eb6a07e8a13610b3d818844f48d5f1557a68b9cc946f50e0c89654ec28e29b0f42d88bf84c6987c21ca6924e2118bbeb8d7022
SSDEEP

768:nf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGWXOQ69zbjlAAE:f1KhxqwtdgI2MyzNORQtOflIwoHNV2Xq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012286-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012286-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2780	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
3008	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_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	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe
2780	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3008 wrote to memory of 2780	3008	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	28
PID 3008 wrote to memory of 2780	3008	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	28
PID 3008 wrote to memory of 2780	3008	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	28
PID 3008 wrote to memory of 2780	3008	2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fa940e66ad9a302fd6281d2e1082b5d1_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:2780

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
45KB

MD5
e71b405fcef153af401119ebc9fd58b8

SHA1
eb743ef329a2a89d7e4e9a5db6e348d99faa402d

SHA256
1e45ae1938c5f3cffe357550995d90d07809badb2dbbbf4f101e9f165011e0c9

SHA512
dea4724014533f7a0e93c879ab2eff8d3b828c4751c38605314f2d0176438b9f88446d5c729d30ef7453119a10cc510ad2ce274b16f06714dfdcc73f8140cf76

Download Submit
memory/2780-23-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/3008-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/3008-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3008-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download