c6e3420fb3fb07eb4c77246a7e6396182c7cdf02dce42af92f66adf0616910e4

Analysis

max time kernel
140s
max time network
127s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:40

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General

Target

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
Size

45KB
MD5

94d73982c99f2ebca9dc7dd3d2d8a873
SHA1

6dfdc38d9c9c1e077d7b3748aa00d1404df2cc48
SHA256

c6e3420fb3fb07eb4c77246a7e6396182c7cdf02dce42af92f66adf0616910e4
SHA512

94a53071438a6ebbb9cc79384d596723f6f3ae094367f89290a1bba9583717016c2f4c9c599048685b983c74f3c6d33041f83c2c0cc5352bac4e2c111ef5b249
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxQ:o1KhxqwtdgI2MyzNORQtOflIwoHNV2X5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	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

Processes:

hurok.exe2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	hurok.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

5036 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5036	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe

description	pid	process	target process
PID 2500 wrote to memory of 5036	2500	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe
PID 2500 wrote to memory of 5036	2500	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe
PID 2500 wrote to memory of 5036	2500	2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_94d73982c99f2ebca9dc7dd3d2d8a873_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2500

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:5036

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 --field-trial-handle=3804,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=4024 /prefetch:8
1⤵
PID:4376

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
45KB

MD5
fa4ef9b1292ca2fd5e0d895242d3ca01

SHA1
bdfa8ff80cb91fbcc501a30221cc5c28a4b03edb

SHA256
62b63b98ed647263bc3be276c97cb584d5f2aade57871f50570b9de0d11d83b0

SHA512
bb8a6243060162cbe91896782a61ff20a45ec6d01ee71f83de6cfe4309bc9f4cfef7c344ccd05f8c90657c31cab4969632ba67f8f5670c75046b8f2cf48afef2

Download Submit
memory/2500-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2500-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2500-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5036-25-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download