2ea0b7734253d2ee4006c1381e970a11620e689253b25895e3407e9c147105bc

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 07:36

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General

Target

2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe
Size

63KB
MD5

d511a09ff6dff596d5c168bdcea0b592
SHA1

e28e1f77d5b7d1b3a8dab7f82c3bcb16ced7218b
SHA256

2ea0b7734253d2ee4006c1381e970a11620e689253b25895e3407e9c147105bc
SHA512

77452242cd26a284898d14855f87f14eb2ee2f5ba9e454bf999dc16c5123e46c441819f7847d2c869de1bef4bf79ee1ec045c619779659a682ea00010983a86b
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGx:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f7-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f7-12.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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1088	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 2900 wrote to memory of 1088	2900	2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe	86
PID 2900 wrote to memory of 1088	2900	2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe	86
PID 2900 wrote to memory of 1088	2900	2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_d511a09ff6dff596d5c168bdcea0b592_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2900
- 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:1088

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
63KB

MD5
c8bd3b3e3c168cf649e54f860e6a2b41

SHA1
a820fdf2f9e2cfa96343f3ff80d7064cfa49c21e

SHA256
678c213c986348807bed7bf502dd31cbfbbf56a5a01a50d4813a734180083a99

SHA512
59bcdad70c979afbfc37dbf08a29752b5a41367e5448e51f3e9d5957ab2a88c1f7ef4f0b4bc1011439b8ba7f305e1483b87e3881519d535c0a9eaea1e8d8d374

Download Submit
memory/1088-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2900-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2900-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2900-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download