b1c86618cfb19e1e66bc8385c630d3a44d4f913b2755cc4bfa60628e01b7af63

Analysis

max time kernel
153s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 23:50

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General

Target

2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe
Size

50KB
MD5

e039ee30a2ee52be561a0a3d113fedd4
SHA1

5444803e576e2ee3a406f04ba8622df03b3b4108
SHA256

b1c86618cfb19e1e66bc8385c630d3a44d4f913b2755cc4bfa60628e01b7af63
SHA512

84c0049805579635b988ef5c971fcb834152029233ff7cacbb7095a351de7dc24c7913afaaeae9f9be0178b3e614de047e6f598dd524f52681b1074438cd9bba
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSOy:bgGYcA/53GAA6y37Q6dI+d51

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	hasfj.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 224 wrote to memory of 4744	224	2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe	97
PID 224 wrote to memory of 4744	224	2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe	97
PID 224 wrote to memory of 4744	224	2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_e039ee30a2ee52be561a0a3d113fedd4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4744

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=3876 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:8
1⤵
PID:3772

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\hasfj.exe

Filesize
50KB

MD5
3e6641d2b16bd2bd048779125037d2bd

SHA1
9d35b8594b5bcceb7d0fdbc08cc20fc7991445f8

SHA256
2600e1556cb0ebfcf260ad8f59c7df5ee2e76f616aa700a6609076aae709299b

SHA512
341951480378fb61a2ad9312cb12ca62d84af8a2635190d89210f9a9dd728d5323a0184e4716900823cbcaac481b30c7a6672a15a76e3cbfdba26f2dd76bd170

Download Submit
memory/224-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/224-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/224-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4744-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/4744-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download