b2ebf22db1da15097164ea4836e985e8edb17f370465b5a827bb539677368e2d

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 02:49

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General

Target

2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe
Size

46KB
MD5

902ec9ee4b062fd9866b6a80968ef201
SHA1

e3260404a753777fa0410f8fc0a0e75af209324a
SHA256

b2ebf22db1da15097164ea4836e985e8edb17f370465b5a827bb539677368e2d
SHA512

a5f683f8ba5fa81d7ab6faaad628f601ff66d0a293eeb44f8796a0f9904b3a73185dea3df626d119083bbde3cc32bba73bdac5b04d9937fd79ad3baacc0dc1af
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcI:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_rule2
behavioral2/memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4340-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_set1
behavioral2/memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4340-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4340	asih.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 1228 wrote to memory of 4340	1228	2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe	87
PID 1228 wrote to memory of 4340	1228	2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe	87
PID 1228 wrote to memory of 4340	1228	2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_902ec9ee4b062fd9866b6a80968ef201_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4340

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\asih.exe

Filesize
46KB

MD5
d2aa5b5ea681df0098c595d33bf80adb

SHA1
01c25b9c86ca50455e88d7b1400d06a308b23f8c

SHA256
ab69b22a577559af4b64f83a91d0bc7282a90b01336e08c19d0639d4957e268d

SHA512
5c88858d38f8db8d3dd658ff19d938ba5d298216b324eb796c9a767aa0c6b3dcc214b9f7c05fc10d05f1502b79ace4744388739ca79dea7c83d03c8422a51d0f

Download Submit
memory/1228-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1228-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1228-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1228-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1228-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4340-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/4340-20-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/4340-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download