b800f3262df0e7b35f6c3d17f1f45fe22d0acb4953c0eeb141e4ae77efb3789d

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 04:46

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General

Target

2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe
Size

49KB
MD5

8d0cf62c001dd45ff72c19f6df167018
SHA1

e66e5de4b1547c10c3828c7e311855599fd08450
SHA256

b800f3262df0e7b35f6c3d17f1f45fe22d0acb4953c0eeb141e4ae77efb3789d
SHA512

f32677efdff756ad896d55b8744e08a6db838a1b75f544f88b408340cac79f762fdabf4add54190068a4f13984858db19936bc1cb1c237f0533d77455eb9ed08
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRHn3u:6j+1NMOtEvwDpjr8hhX93u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3124-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023251-13.dat	CryptoLocker_rule2
behavioral2/memory/3124-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3840-59-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3124-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023251-13.dat	CryptoLocker_set1
behavioral2/memory/3124-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3840-59-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3124-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023251-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3124-21-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3840-59-0x0000000000500000-0x000000000050F000-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	2024-04-10_8d0cf62c001dd45ff72c19f6df167018_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
3840	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 3124 wrote to memory of 3840	3124	2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe	94
PID 3124 wrote to memory of 3840	3124	2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe	94
PID 3124 wrote to memory of 3840	3124	2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_8d0cf62c001dd45ff72c19f6df167018_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3124
- 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:3840

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=4092 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:1464

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
49KB

MD5
f7ad77dc921534569401ed0a3636a204

SHA1
5c760376931745d70631ad338cb6cc63b3b9cb06

SHA256
3874a606623c6463af646cf18b1fb5423af120f2457f07ad981d8022b0d93b57

SHA512
0d093e8ed9c2746c3d1209906276822af52b9ac1b81826de921467b09fc324db551c56125b046c158242784f3a947da0c6fb583b9cbabbd2d20115287f7dc28b

Download Submit
C:\Users\Admin\AppData\Local\Temp\misids.exe

Filesize
1KB

MD5
7220ab0788bc659b79e392d27b6461de

SHA1
4bd000802eea16e46557c9701a19003340166c37

SHA256
6e8929e7b32808b650dd76285b9743d9659eba9fe1fe3de9f8aa69ff0bd07a69

SHA512
408992fcda336e565b01b65abbb494ec4777d2a57bed3aaea0a56922471310545335f12349e6577a79ac600524ac9c11752f470267e76d16ec3dd5a87fb0eb39

Download Submit
memory/3124-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3124-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3124-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3124-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3124-21-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3840-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3840-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3840-59-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download