84f413e1b9549de2cac86f6d6a511df383f80ef1541cfce0a23b2fad4c69e735

Analysis

max time kernel
103s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 19:25

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General

Target

2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe
Size

44KB
MD5

9b5d13c1008e877c4e947038e3408fb0
SHA1

d3c2d35c333d3aa6f218d5675dd9366760afc3c5
SHA256

84f413e1b9549de2cac86f6d6a511df383f80ef1541cfce0a23b2fad4c69e735
SHA512

7e46983fca0fd5459dabe97c2f04dcef629bf2177e752c7ed68207811f041d545495ca4d58911a9c441250f487182b1f309e143cb58ba49024b55c7d1ae0dc14
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96egDL:btB9g/xtCSKfxLIcMzUw96nL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

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:

2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exegewos.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

Processes:

gewos.exe

pid process

4888 gewos.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4888	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe

description	pid	process	target process
PID 4116 wrote to memory of 4888	4116	2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe	gewos.exe
PID 4116 wrote to memory of 4888	4116	2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe	gewos.exe
PID 4116 wrote to memory of 4888	4116	2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe	gewos.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_9b5d13c1008e877c4e947038e3408fb0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116

C:\Users\Admin\AppData\Local\Temp\gewos.exe
"C:\Users\Admin\AppData\Local\Temp\gewos.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4888

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\gewos.exe

Filesize
44KB

MD5
3f0adcda472b71f2cfd6a17313221fa6

SHA1
6a08e1aaaacb190209d556040592319c93bb0c91

SHA256
bb58eaa6bebc30f91cecdc1210a9e7ad8d1ec661c6b2c594cb9630133bc037a3

SHA512
60a3fbe59b819c1a618ae61b9537da73a66735178e795eb8407e0f1d9b4e5302379f3fe22f9fde034b55623d19e6cd2138c3072f81d64e4041dbddbb5b3ba16e

Download Submit
memory/4116-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4116-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4888-21-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download