5f3ca0d00c8ebeb870549e2b321ac9bd9cc68acf8a569276b2c25fda459e8f28

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 19:59

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General

Target

2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe
Size

4.5MB
MD5

fd760cb3834dd75ba4833357b3be9624
SHA1

f7dc45e22a083219a1d1c32808cd8a028b0a819d
SHA256

5f3ca0d00c8ebeb870549e2b321ac9bd9cc68acf8a569276b2c25fda459e8f28
SHA512

e99116b8423baec72235238f0f5700e442b59f568e0ce65e188a08502c8fcaa891e72151515bdd23e18646ee88dde916277493af80811b7cf7af14edebc71259
SSDEEP

98304:g/ZFIjBzldUfs/ZFIjBz7jSZD1tU7ymTU:g/ZFIjBzF/ZFIjBzPEUusU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	CryptoLocker_rule2

Detects executables built or packed with MPress PE compressor 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.dat	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 1 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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3196	hasfj.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 1008 wrote to memory of 3196	1008	2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe	90
PID 1008 wrote to memory of 3196	1008	2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe	90
PID 1008 wrote to memory of 3196	1008	2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_fd760cb3834dd75ba4833357b3be9624_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3196

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\hasfj.exe

Filesize
4.5MB

MD5
0aad79690ada6f78b4fc42b014eaf503

SHA1
b0c1b846691fd4f075efa292f473ff243e981845

SHA256
f0fa4f6dd32481689e8002eb0330c78e85b908c8511f0e04aa0da852c7ad220b

SHA512
ac5efc4879b7bdea62c9ce9a096e77ba4590dd1b0fafa17b7a894947b84f284a6c5ae93ceb805358eaa403eba068c7946557e45921458ce8dc91f55730ad5b9a

Download Submit
memory/1008-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1008-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1008-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3196-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download