ee7a06b306a1a16d50370e88df8e3af78df30e6646334f8eab07ef31dbff780e

Analysis

max time kernel
93s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 13:36

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General

Target

2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe
Size

34KB
MD5

5ce14db5e67c742f01fc8227b6a4e2c7
SHA1

6fe4d8684dbc30ddb228b04bfc83015b6d070538
SHA256

ee7a06b306a1a16d50370e88df8e3af78df30e6646334f8eab07ef31dbff780e
SHA512

fd1f7bab6d974da9fad4576bcabac256ebdbd36a30e7c38daee37615a26eb94fd02aba6382bf748a50903748ff6765f4ba9b9ecb321beb68b478b2e9a9cbd622
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wml:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226e5-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000226e5-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4304	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 2764 wrote to memory of 4304	2764	2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe	87
PID 2764 wrote to memory of 4304	2764	2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe	87
PID 2764 wrote to memory of 4304	2764	2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_5ce14db5e67c742f01fc8227b6a4e2c7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2764
- 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:4304

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
35KB

MD5
45fb3b67615bdefa18f3e240e2e170c1

SHA1
a5650e9ee23593ca83183ba54846e7d2dd47c88a

SHA256
9d0c0b5f5f3d5419463d5fc47dbf1c782fb5b1f9c567558a5e3537d93b594df8

SHA512
188006ef3ac902a3aa02dc65b873ea1217deb4d2d475e2d8e7594e108cf3746fec4ef742ff45bac45216438f70123a20c3bb02ee9836b3acd9a749b944cdbbb0

Download Submit
memory/2764-0-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2764-1-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2764-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4304-25-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download