ae7e8a7be3c0f55c2aa778badefae75daf39805a5870a6e6fa531457d3eb027c

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 12:36

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General

Target

2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe
Size

64KB
MD5

5b5296701c3c9f06e7c2ee0a69849c00
SHA1

d3963a854df270eda199f26e4d49a3bfd86ca81a
SHA256

ae7e8a7be3c0f55c2aa778badefae75daf39805a5870a6e6fa531457d3eb027c
SHA512

945f83056a68d829629f958511ca66cb17a83be02e47495a5944236cd79456e015ced70ccd95dd7cc4b1d84d0690f1f32cf13c6adf119613ef183035c889336a
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSc9n:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7l

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4476	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 3940 wrote to memory of 4476	3940	2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe	88
PID 3940 wrote to memory of 4476	3940	2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe	88
PID 3940 wrote to memory of 4476	3940	2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_5b5296701c3c9f06e7c2ee0a69849c00_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3940
- 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:4476

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
830a709b3fac548a413c4d45bee34994

SHA1
b4b6910ec9489aba44e3484b8ecff44a0725b911

SHA256
b890228c64eff14dc2d2ebf5853d0df988c740bf2c929471a088f1ad7d0a0c77

SHA512
5751c840f89bcae2524d926a2380e38e51ff24ec39b718e4b44b0543aa956e12102187853b66637802892bb81fc9cc4291411de2615583b9ea2dad9eeef46008

Download Submit
memory/3940-0-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3940-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3940-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4476-21-0x0000000001F00000-0x0000000001F06000-memory.dmp

Filesize
24KB

Download