82abdc035c95470f808cac4d2f0cdd894b44e6e35661702b748137460a15c293

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 01:46

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General

Target

2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe
Size

70KB
MD5

444e78df9442d6e7e2dabab1cb555384
SHA1

e93ffb2887c9295ee2d5c2652d03416443f6faaa
SHA256

82abdc035c95470f808cac4d2f0cdd894b44e6e35661702b748137460a15c293
SHA512

e1884b0d649e84016fabcbef5fbbade9d97f60b873cd67b4cf152dc43da40f96541a57d9b2e29b33814149f7b3edae32dae8d96fa7902eb043e0f20bd81417e7
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9Z:C4Q2c94OtEvwDpj4H8zY

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2624-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db0e-13.dat	CryptoLocker_rule2
behavioral2/memory/2624-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/860-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/860-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2624-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/860-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2624-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000001db0e-13.dat	UPX
behavioral2/memory/2624-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/860-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/860-27-0x0000000000500000-0x0000000000510000-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
860	misid.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2624-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000001db0e-13.dat	upx
behavioral2/memory/2624-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/860-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/860-27-0x0000000000500000-0x0000000000510000-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 2624 wrote to memory of 860	2624	2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe	85
PID 2624 wrote to memory of 860	2624	2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe	85
PID 2624 wrote to memory of 860	2624	2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_444e78df9442d6e7e2dabab1cb555384_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:860

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
70KB

MD5
31659104fbc7dec6fedfbdd62844e73b

SHA1
980b6b38b4f2163b929237fe0fae8a86718b9633

SHA256
80f1584e367ef0feff0169f6ec5e1ede3041f582b79ca0cc5bc775dfd151db50

SHA512
0ce6821148883f4af11dd25b08bc19a858bfb678ad8239760ed02729f3649ed4be74af1cd7a9bb8e1c418749847127bc65ddd922860a7011c1914132ec940a87

Download Submit
memory/860-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/860-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/860-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/860-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2624-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2624-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2624-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2624-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2624-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download