2b674b77ceebc7e777284945ddf4b77d77e035f7e0cd0addbc8660fb7d53ab0d

Analysis

max time kernel
161s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:33

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General

Target

2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe
Size

32KB
MD5

8881266be8ee0bbf193df0e32b7fb813
SHA1

ff087051ce8b9f4e4146674cf271d21c42fbaee7
SHA256

2b674b77ceebc7e777284945ddf4b77d77e035f7e0cd0addbc8660fb7d53ab0d
SHA512

d9b54b69f6f103f399a99bae66e7a349d512a3e0f705ca5d30ec9d3e735abb8042d4dbd36d85b26deafcd89f14fc89fea3bffde6b74b6983c119d7505e5fd3e0
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuEFo:bG74zYcgT/Ekd0ryfj4o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2240-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2240-10-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/2204-26-0x0000000008000000-0x000000000800A000-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

Processes:

2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

2204 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2204	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe

description	pid	process	target process
PID 2240 wrote to memory of 2204	2240	2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe	hasfj.exe
PID 2240 wrote to memory of 2204	2240	2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe	hasfj.exe
PID 2240 wrote to memory of 2204	2240	2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_8881266be8ee0bbf193df0e32b7fb813_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2240

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:2204

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1316 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:436

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
Filesize
33KB

MD5
ebe9a27d1a34fac5295f8ee8e0d757f6

SHA1
d1e2d71d8c78ac7e26749cf1c81df04ac3f83f6a

SHA256
ff23f3eb20318f02189106ed6503d4faf2688ba5435a84fd43318e8233fabe57

SHA512
a302b82694a778cca1a1d8b13998d494bed0d0f7d0a90ca13aef0f8f9640bfe160640ba3612b156de2741be15f6a7c89b70bb5d89d2b4a1e934c27ae1746ff9a

Download Submit
memory/2204-25-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/2204-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2240-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2240-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2240-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2240-10-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download