cdb83957bcf4fc8cb2521f2c47c4af3c7b364b3668da2eb887e4620b45fe89a8

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27/03/2024, 03:33

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General

Target

2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe
Size

54KB
MD5

30bcb1b58a4f94e219eadbb3d5d8c0fc
SHA1

4b363bbfbff79497458fc1ad71be56e031f79cfe
SHA256

cdb83957bcf4fc8cb2521f2c47c4af3c7b364b3668da2eb887e4620b45fe89a8
SHA512

ebd68a16c86b8e57fca8843fa95e86710bcbca00e8109a28e9a690d7200f283740dae683a7fee366385bc6fdb07ed86865e2352b0cb2095bbe64f012b863b07b
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTbmhTBgo:bIDOw9a0DwitDZzcTG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023213-12.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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3080	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 4052 wrote to memory of 3080	4052	2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe	87
PID 4052 wrote to memory of 3080	4052	2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe	87
PID 4052 wrote to memory of 3080	4052	2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_30bcb1b58a4f94e219eadbb3d5d8c0fc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4052
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3080

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
54KB

MD5
ade401809163126237d5bda98385c5ec

SHA1
894a625d4f58f343d8eda9abe63f9b553b097f8f

SHA256
3307ee9732d74242304c2f9baf966dc08d2cae10c307261c67be4a2af55176fc

SHA512
f5b7a69691dad80eff869cd4603f790396da5dd95986534afd6057ae111d40bc73f826ef194a64def20661a14daa4ec729f511d63db069bc70aef1867d70a25b

Download Submit
memory/3080-17-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/3080-19-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/4052-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4052-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4052-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download