09ccbb731ce6a838db827e2f8a2e51962060e9ce077d966c9b3685bc18deea86

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 03:27

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General

Target

2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe
Size

64KB
MD5

07a2afc1b755f951bb916cbf261aa0c1
SHA1

ef21a2adf8475d1994d8856932fdfd7e6252c1c7
SHA256

09ccbb731ce6a838db827e2f8a2e51962060e9ce077d966c9b3685bc18deea86
SHA512

8cb6ec3ac3e0936ce0d0f46e3a7c27264de42b791898cdcf4a9e1bba654d6d3ea4aec64839569549aa0b67c4dae95424031f66106cdc5b05c569444a7db849f2
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScG7:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7C

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233dd-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233dd-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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
644	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 5076 wrote to memory of 644	5076	2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe	88
PID 5076 wrote to memory of 644	5076	2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe	88
PID 5076 wrote to memory of 644	5076	2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_07a2afc1b755f951bb916cbf261aa0c1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5076
- 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:644

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
64KB

MD5
33f941449250bd94adcb50b2b5d6f422

SHA1
e5e47fd7dc3562c5a30f5c4a87b322e933a89ee2

SHA256
c0a49c38286353b80275395f62d68fe149e9d49fa44f03cecc87b7b14dc71c9b

SHA512
114930e3319461a0585beb79c5d1e6c59c9894a0ce2ef46a3ad77a44bada79e31d386556b14125fb28409c54784bd21679048ee40906565fbb22db3492ff2f35

Download Submit
memory/644-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5076-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/5076-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/5076-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download