5465b5102fe150c2295e1b71b0cf9bd95b7abe7c81e3a153655ab3d6e8a3679a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 18:44

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General

Target

2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
Size

42KB
MD5

3fab226e2695d745a4c7b2606eff16e8
SHA1

fb69460381e3c1995aa971cf715a46580493004b
SHA256

5465b5102fe150c2295e1b71b0cf9bd95b7abe7c81e3a153655ab3d6e8a3679a
SHA512

74970c2167e02d502e4a81489c3f8f02a43059a3174ea3bceaf3d7941f7e2aa74f2433ceabc97e3d5aa38e476d7e52a42e1610fb48b3659326cc06f346cc955f
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAydI:bCDOw9aMDooc+vAym

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2856-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023308-16.dat	CryptoLocker_rule2
behavioral2/memory/2856-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3184-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3184-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3184	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 2856 wrote to memory of 3184	2856	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	83
PID 2856 wrote to memory of 3184	2856	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	83
PID 2856 wrote to memory of 3184	2856	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3184

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
43KB

MD5
84786bf6ee597a31fd8a9db1ab7c772d

SHA1
86cf50062a5a1d459f68254219233451a477b0a4

SHA256
456384ecb38e0725131d89ea9fee51ab31d9e54cf6cb7173fb1c17114b59063f

SHA512
b6f89ed7039c8c8d9dd1d799815a63c161d6cfa34f42f4ca7ff0cea74748f5dc0f9ed8bb44dc7e39dfd4365e2169adbfaa4e1099ebe7819a2a7babd20316fe98

Download Submit
memory/2856-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2856-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2856-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2856-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2856-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3184-26-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/3184-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3184-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3184-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download