1726b9d5ced2ab7f5c30d08ccd8e6cafcf2525825deed08a7564b600337d582a

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 19:55

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General

Target

2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe
Size

99KB
MD5

bac9c90bfc1aba30f7f1e346561ba66b
SHA1

d18bde7922c91ab9fd4decc508e54fe60544d6cd
SHA256

1726b9d5ced2ab7f5c30d08ccd8e6cafcf2525825deed08a7564b600337d582a
SHA512

e7dc693ec189a60dc59270e1e77ed5b8ab49a630bb374b99414b6e0ef36f2f3c07504cc8252d85ea4b36d2bca56e02a64b8c2a6d11c5d2cd58d7006f2d65a69b
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2i:xj+VGMOtEvwDpjubwQEIiVmkxv/u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002322d-13.dat	CryptoLocker_rule2
behavioral2/memory/4604-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3220-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3220-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002322d-13.dat	CryptoLocker_set1
behavioral2/memory/4604-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3220-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3220-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/4604-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000600000002322d-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4604-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3220-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3220-27-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3220	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 4604 wrote to memory of 3220	4604	2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe	86
PID 4604 wrote to memory of 3220	4604	2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe	86
PID 4604 wrote to memory of 3220	4604	2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_bac9c90bfc1aba30f7f1e346561ba66b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3220

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
100KB

MD5
e15a4c14fa98d0990b774782620725c6

SHA1
8092a9ce3225d66e169efdfb748068923d9c146b

SHA256
0923726b7b4cd63b00a25f46ea6ca355c5803ad1db1b9dd01f94775c287a44eb

SHA512
8c95f550fa17b1fb86e840ec6099b42c1309a96d080cf419a3c80bc01cfd7ea987a7071f24bc26789889e1bef1586b14f891595a04455c809488c61e51fe78a6

Download Submit
memory/3220-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3220-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3220-21-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3220-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4604-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4604-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4604-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4604-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download