bb12173a7f592bef93a07913640c07fec759a334c34058082cc773d5aa47888f

Analysis

max time kernel
141s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 19:44

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General

Target

2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe
Size

50KB
MD5

2f7270a9e1c5d4062ed7533f998ed277
SHA1

1c46fa82169a5623e1af5edf9dde6934ea59b8e2
SHA256

bb12173a7f592bef93a07913640c07fec759a334c34058082cc773d5aa47888f
SHA512

9d84edad2f263bb74cbf91a1951885788f1d43c090f3a904a0e53ccedb8036d2767123e1d2eac25b34b013de9d2b1efb8fa2297128f659b6d5eb16c5bdbf6b6a
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAICh:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7V

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320e-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4020	hurok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4368 wrote to memory of 4020	4368	2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe	93
PID 4368 wrote to memory of 4020	4368	2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe	93
PID 4368 wrote to memory of 4020	4368	2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_2f7270a9e1c5d4062ed7533f998ed277_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4368
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe

Filesize
50KB

MD5
f2fcd865f2838202d78fdd8cac41c024

SHA1
d49725f45858b1ad01679e5d63d26db7404f0ff5

SHA256
aab35235adaa3eda035bb1b50bd80b43cffba9c8a20ad9296d4bc2e033d1e924

SHA512
23cec8d83e6dc35fb54f120888a4a8b1063cb1057f37fd58530410ac91af50dba0c6d3de963cae49ac66b69d1103304dc86cff2d6124443fb110cdbd26064061

Download Submit
memory/4020-21-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4368-0-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4368-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/4368-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download