2a29166218ddf08738d3032b3c84c0503e4e6013e753eecb21a35cacf80fe59e

Analysis

max time kernel
89s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 22:38

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General

Target

2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe
Size

44KB
MD5

b35dac44e5f703cc2f4a53923a6095f0
SHA1

866256c198edbbc50186d0e82979dd4fe1851166
SHA256

2a29166218ddf08738d3032b3c84c0503e4e6013e753eecb21a35cacf80fe59e
SHA512

684eb07ab6bdd4ca8ddd78ab7c35f06db91332bf1a373e3e61daec2119ddedb57c934887ebe55193a47d5ee6207eccee8620ddf4ad8c66a1b3a32547439674c8
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxR:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322f-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
1172	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 2840 wrote to memory of 1172	2840	2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe	83
PID 2840 wrote to memory of 1172	2840	2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe	83
PID 2840 wrote to memory of 1172	2840	2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_b35dac44e5f703cc2f4a53923a6095f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2840
- 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:1172

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
44KB

MD5
c8fd8aef33668d38757afe142543e3d5

SHA1
aa2a2863aaac0be38c2655afea6d41c7cff9af8f

SHA256
fa5a9d8803400af78cc7d984298b64d2eb4a18cbae9905f2d10fc1d028240d2a

SHA512
49112eb5a7d477ca556e24fc4b481a2e7c0c2d9a3014eff3eeb7cf7a0c9cd53758e8b1aa2fece69c10304fabd5532c73265e2fbebf4f926cb7cc8f219c5280f2

Download Submit
C:\Users\Admin\AppData\Local\Temp\hurrok.exe

Filesize
1KB

MD5
7189230de3308b7728f1f0fe6908342e

SHA1
1d42bec8991cc53d0bcf5624541f5a1d29462143

SHA256
0fac227138d49f44db2d44056df8ba9e98bc3518093ee00e9ac80d2e89f26939

SHA512
dfac9c996b7bea977006bd606d0acb3ed841a3d41df6a705edb4230088d8943e9269fad7563045e923c0582d3a0835f906bbdba6c8c0fbae79ada81b8da5ccea

Download Submit
memory/1172-21-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/2840-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2840-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2840-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download