57660d2ead4ca60aaaee659ecd5293310e8e3db659ef795e5bebcf7eaab46e1a

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29-02-2024 08:36

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General

Target

2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe
Size

63KB
MD5

540133c2799cabad4b5c8b6f81a5e0d4
SHA1

caea03bbcf8c84d6fb69d224df39d8e403e345d3
SHA256

57660d2ead4ca60aaaee659ecd5293310e8e3db659ef795e5bebcf7eaab46e1a
SHA512

1daf0c6f90091a036279940cad4375c8473d598b441f60f6422a7d36526adba7fb23a05782264ed46ed76be7f40c6f8fc56a0ef0106d313db1d753e6734fe905
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGs:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7Z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023231-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023231-12.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	2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_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
4748	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 228 wrote to memory of 4748	228	2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe	90
PID 228 wrote to memory of 4748	228	2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe	90
PID 228 wrote to memory of 4748	228	2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_540133c2799cabad4b5c8b6f81a5e0d4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228
- 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:4748

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
10529da180b245dbb34506e20e5da384

SHA1
a9e534eec8e0696433f6055f0fd5918d97f214e1

SHA256
5855583fb154f710920ed33bcdcb4031094ea4fdc8972c5494a6fd4e57f33690

SHA512
3e7118361e2e91001df820ae00642f1d1d1cea977a8d5d6b885d3558c2f47b878c7c40ce5f9e46406c94fd9fbbf0d89cd76241830d3ba82fd7fd1de3a7826350

Download Submit
memory/228-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/228-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/228-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4748-20-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download