da4bf236e88f381856635a223bee904a5fb8bc8e94178687adb3e226ceca2ade

Analysis

max time kernel
143s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 05:36

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General

Target

2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe
Size

85KB
MD5

922dedcc54cb9b63343a86e50c28b097
SHA1

87285ba76025442a5f5a1a3b5479b17d50dadf3d
SHA256

da4bf236e88f381856635a223bee904a5fb8bc8e94178687adb3e226ceca2ade
SHA512

c0f07237f5c78fac8da8af68e4c238f130f66ab9abe92c47edea588b6a87f2419e1fecd53b722b8467ea3c9563de919fc11411fdaebad359626ec1a90d1a7b2f
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvzkxraS:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8z0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3132-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023260-13.dat	CryptoLocker_rule2
behavioral2/memory/3132-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3956-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3956-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3132-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3956-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3956-54-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3132-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023260-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3132-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3956-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3956-54-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3956	misid.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 3132 wrote to memory of 3956	3132	2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe	97
PID 3132 wrote to memory of 3956	3132	2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe	97
PID 3132 wrote to memory of 3956	3132	2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_922dedcc54cb9b63343a86e50c28b097_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3132
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3956

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=4068 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:3060

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
85KB

MD5
6d006b75c54ffd0f808a93cee04b5460

SHA1
1accc5f6408a178ec0eae10db1be0db67bd95509

SHA256
a9f205a47e946c0aee794b98a402213cbd0ac463ce901c9a4197085755d02a5e

SHA512
7370d4b15d9dd19e2de0986a082fd3b4e5475cf4627a7cf58fe8e7b2b91110946bfa0a94bccb2198ffc248a7ed3f95e224668f774ceab692fb71229a2d0c2f3b

Download Submit
memory/3132-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3132-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3132-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3132-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3132-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3956-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3956-20-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3956-21-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3956-54-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download