90f64e81fb955b48891c59fb00110f13fa35ceeb52805babe04b2601dd241455

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/06/2024, 15:54

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General

Target

2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe
Size

43KB
MD5

524c875c55b48ca4e96c646293924d39
SHA1

890a2fe6c5139cc9e89f124ee14b33bb20091901
SHA256

90f64e81fb955b48891c59fb00110f13fa35ceeb52805babe04b2601dd241455
SHA512

98393859a59c1f07f1842728d80bdd3a224e3920d8fc397a8e6b68c544332707eb8033fb7f0e61708685aff862f434d36480ad07cabeab4ef643f25315b829f9
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYshNhl:i5nkFGMOtEvwDpjR+viHshNT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2276-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001231a-11.dat	CryptoLocker_rule2
behavioral1/memory/2276-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/2276-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral1/memory/2276-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000d00000001231a-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2276-15-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
3024	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2276	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 3024	2276	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	28
PID 2276 wrote to memory of 3024	2276	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	28
PID 2276 wrote to memory of 3024	2276	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	28
PID 2276 wrote to memory of 3024	2276	2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_524c875c55b48ca4e96c646293924d39_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
43KB

MD5
c095318da799019e14edce676f3a18ef

SHA1
bcd4ac565440ad64953fac9bf50eb6b867975b8a

SHA256
9ba02675a09fa67f920c5c724383f33e6e76c6f76c6280ec24a98aa6880c02b5

SHA512
1e1ccba7a92f8c65f453ce98768e98bf9eeb7dcb00f36b2f20d95bd1f67f586031a827d856d53c0dc9b8974e743ac815138da3e116bffb3ad0baa0176234bf17

Download Submit
memory/2276-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2276-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2276-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2276-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2276-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download