8b9c1b34f8eb03e64f5274e37b5556779c2c31d7e5d570d1d45298f4704578eb

Analysis

max time kernel
145s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 05:32

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General

Target

2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe
Size

50KB
MD5

1f27c53a6ca613a5cc491f3a11ae0005
SHA1

f5226d8a1619fed4426bad6eac3e4d8ddf3bd479
SHA256

8b9c1b34f8eb03e64f5274e37b5556779c2c31d7e5d570d1d45298f4704578eb
SHA512

61fba55947d6acc50bfbe1f8dba305430e196bc1d7026a2f26191fb445a442d58751ae6ff1750c5cdc69554a366f8729fa48050040a043e4aa178c8214960bcf
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAII2:aq7tdgI2MyzNORQtOflIwoHNV2XBFV78

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023265-13.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023265-13.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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	2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

pid	Process
4732	hurok.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 3852 wrote to memory of 4732	3852	2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe	100
PID 3852 wrote to memory of 4732	3852	2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe	100
PID 3852 wrote to memory of 4732	3852	2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_1f27c53a6ca613a5cc491f3a11ae0005_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3852
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4732

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=3592 --field-trial-handle=2328,i,5873823382323802923,13134441441264702821,262144 --variations-seed-version /prefetch:8
1⤵
PID:1524

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\hurok.exe

Filesize
50KB

MD5
615628bb70d308a9e67600aefa96dc26

SHA1
bf071cd88107a1671b65409e5229f24f90d9e17d

SHA256
5c69bc39fd19cb76cc436a18279b5f4277c30a704db7a8f0440f4dd05015aee0

SHA512
a1bf24801aaeade58000bbd837d0d33f6f926083e4c3f4e6da7f4d8afa4c1dcd57ee47196edc8af7f9c2700055e8c70d696a0deaf1688506b42b7170acb4e24b

Download Submit
memory/3852-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3852-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3852-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4732-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download