f2a8924e8a23d4f32a523c805f28b109cb2037e1391740eaa0a9b4de1d97ac2b

Analysis

max time kernel
150s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 19:51

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General

Target

2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe
Size

47KB
MD5

ebb3a70156868ad40d189fdbc99ab442
SHA1

9e0b4536ca25ef4a495a95fa70639b25f423ca1b
SHA256

f2a8924e8a23d4f32a523c805f28b109cb2037e1391740eaa0a9b4de1d97ac2b
SHA512

26e7aa8d3ea24e706ce7faa83f085b46d3258837d329792ab1392c5d0c07451c52afb0dd7c0efb854c5a5717078ab77dd02a1c13352bfcf2a6b85eeb0082bfd4
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuCmGsl:bIDOw9a0Dwo3P1ojvUSD4PInrmV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023220-12.dat	CryptoLocker_rule2

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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
376	lossy.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 4792 wrote to memory of 376	4792	2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe	92
PID 4792 wrote to memory of 376	4792	2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe	92
PID 4792 wrote to memory of 376	4792	2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_ebb3a70156868ad40d189fdbc99ab442_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:376

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\lossy.exe

Filesize
47KB

MD5
2530924f1fb84ad5a224afe530899ff7

SHA1
ed07f496b6e60c51f48214dc7aeca2087b4d6732

SHA256
88d7841acf700c083823c1f4db262a01b385fb9ac6d34ee1af341892a4ba68ed

SHA512
cd43ba33ba31b1c712131f4d42bead912c1ade15b64507e82f957de308595e0ba100ee6b00708fad1e11295d3ab21080ad7364d545b3e12f20c05ed80077a3c5

Download Submit
memory/376-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/376-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4792-0-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/4792-1-0x00000000022F0000-0x00000000022F6000-memory.dmp

Filesize
24KB

Download
memory/4792-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download