4ddcd25f0f8fc2b9188a7f1345f58852dc7e9d4b392841eb4bfe23b257f762e7

Analysis

max time kernel
139s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 16:29

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General

Target

2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe
Size

64KB
MD5

2298f2eaeb099dcc24b7f671c3cb592a
SHA1

bdbb03f47af6309eed6aab53b53e7fbf3f7bd52a
SHA256

4ddcd25f0f8fc2b9188a7f1345f58852dc7e9d4b392841eb4bfe23b257f762e7
SHA512

b96a53314614d535bded0de4507a71bc07b5010664e16a46c48c25c30e2bd968900ea52140ed9103b2d3b88941d06626100fd8d9f30fd426968d917a624b4970
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5kJ7d:zj+soPSMOtEvwDpj4kpmeLmQld

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023256-13.dat	CryptoLocker_rule2
behavioral2/memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3200-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023256-13.dat	CryptoLocker_set1
behavioral2/memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3200-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x0008000000023256-13.dat	UPX
behavioral2/memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3200-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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	2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3200	misid.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x0008000000023256-13.dat	upx
behavioral2/memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/3200-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 4848 wrote to memory of 3200	4848	2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe	90
PID 4848 wrote to memory of 3200	4848	2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe	90
PID 4848 wrote to memory of 3200	4848	2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_2298f2eaeb099dcc24b7f671c3cb592a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3200

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=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:3752

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\misid.exe

Filesize
64KB

MD5
4ffe542c80834275fb565599a3101a74

SHA1
c5bd20697d6b1aa6167dd9405b3386ac96aee04d

SHA256
d1def9e2b50ff8ca6408dce0b430a69f33a0ff1e905e7d518790d185939181af

SHA512
798bae3ea406ff971b28ebdaa8a7beb1b0c9567a64b466adfcbf8404b370b92122b897203ba297d15697eea30f5ab3dcc51d594faf0f5315cbe8563fbebc6029

Download Submit
memory/3200-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3200-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3200-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4848-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4848-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4848-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4848-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download