7df21ce5bdb44c0e3b2c71051a60c64b8adcfb9d27ae86dda4528f2bb26eb57c

Analysis

max time kernel
136s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 08:46

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General

Target

2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
Size

42KB
MD5

f4ef363acf78ac84278ee746a23b9ba3
SHA1

06c5b3b8e5c04abc459338d50c33442e3ae3651b
SHA256

7df21ce5bdb44c0e3b2c71051a60c64b8adcfb9d27ae86dda4528f2bb26eb57c
SHA512

c631ec1a30daedb3da58ebd95e427bb295e31509aa0edfeea4c56b831365dc921a78ad9eeda0e94c77493e483259796ac6a5b87628c149113e7ce07deb34f77d
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3Kxz:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-13.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
3032	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 4944 wrote to memory of 3032	4944	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	88
PID 4944 wrote to memory of 3032	4944	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	88
PID 4944 wrote to memory of 3032	4944	2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_f4ef363acf78ac84278ee746a23b9ba3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4944
- 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:3032

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
43KB

MD5
67b661561e8b2a132f861f96a1fe6b4a

SHA1
f3ae9d00b4073b87c42bee83d178a92908fc38a3

SHA256
a447b61b0c16cec4a547b8a6cae5dbab84f48900c1875ae66b4762ad0b12e13b

SHA512
530c69ac4dd1be9e71690bf3d58d14b9848bcc15c52930242bd150e289cc85a54e18d86dcfcdad99a84b356e1b2c631bd5986fb713187a5fbd0e3e5a93a3a02e

Download Submit
memory/3032-18-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/4944-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4944-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4944-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download