9169fa6d62422f0b281fc365e21e56f2c87dd2076b076238838ac5e2b1a2c31c

General

Target

2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe
Size

65KB
MD5

ebba5c38f26e587d4a70f386ca9b0f32
SHA1

f92c84e06bcf35e3025f7658e038c0a6e9ba2a02
SHA256

9169fa6d62422f0b281fc365e21e56f2c87dd2076b076238838ac5e2b1a2c31c
SHA512

bbe59a95cfcca95c09e257b51792995dd32439eccbd33f4c7f635ea0a5cedc6a385e34833ecc178914e31ed552897c430ba91e9c06a8b93393c4f73afe8a504f
SSDEEP

1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3hvLcbVN:ZVxkGOtEvwDpjcawn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d0000000122a8-11.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2228	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2264	2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies system certificate store 2 TTPs 3 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	misid.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	misid.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	misid.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2264 wrote to memory of 2228	2264	2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe	14
PID 2264 wrote to memory of 2228	2264	2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe	14
PID 2264 wrote to memory of 2228	2264	2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe	14
PID 2264 wrote to memory of 2228	2264	2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
1⤵
- Executes dropped EXE
- Modifies system certificate store
PID:2228

C:\Users\Admin\AppData\Local\Temp\2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_ebba5c38f26e587d4a70f386ca9b0f32_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
64KB

MD5
c6e08e23a20fa2546be9cc48e88e22b7

SHA1
11c5575a948dbd762c04cfd5f320fcc73e529e44

SHA256
99b6cf9bc6a471c16f23ca768ad1212432173670610f0b524e22c21021049c7d

SHA512
4e99cce8568ec05c74b22e938b4abc599da7ff5b5f620d1fbf0cda852a94a9e70c07a0620d5130d8b2ff575d98af165b767fb8aecf28b8e4c7aa181ef36e5c01

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar18C.tmp

Filesize
45KB

MD5
cae17bc9c5d74e0e1142b20a7889efdb

SHA1
cfea5f7d29a7dad0a1a25daf18a0cd4cb79cac86

SHA256
4d74c7d252b593f92d04a5538ff5688a4ec720ab664ac723512fbcfa3f5ab691

SHA512
42ba66aa767f8a15ce38f9e72990fe41e4fb2d7266e4334be0bcb7db7ac7eb38e7f3b424bb4fc5583197257e9fefc11ab19285f0881a054f338463fefb483dfd

Download Submit
\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
65KB

MD5
2b2eddf84364615a82640470d73d6f48

SHA1
86d1f593675c1ee83fc99dc3da620661149d9995

SHA256
3dde1b70152295c15b6f0ea9aa9d277855aaf59b6e165b38d61ce40ec42a13e0

SHA512
606165faa441a7ed65f20033d40f2aadad99335ff287a35c65daf33ddafa384ad1ac1aea42887cbf0ef5d3b41577e95f01b486663021fe0516cf9a4508dc9d83

Download Submit
memory/2228-23-0x00000000003B0000-0x00000000003B3000-memory.dmp

Filesize
12KB

Download
memory/2228-16-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2228-24-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2264-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2264-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2264-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2264-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download

Analysis

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