d37bf7f95d3b025281a1912adb3a151f80e4db8dc8eb56624575825b99102d78

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 03:38

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General

Target

2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe
Size

72KB
MD5

5211085867990cd9f7457e4f0e65c542
SHA1

596094f26bb4d0f355a5f3ec0516635757e613f8
SHA256

d37bf7f95d3b025281a1912adb3a151f80e4db8dc8eb56624575825b99102d78
SHA512

2129df9d2034538b8c51a0836ede5daaec4a957f480abd5ddd7865e91c7087e583c5784da4b723904f9cb33c5907c5c7bed900fa5cdd4fe7657b4d6d0279a690
SSDEEP

1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs95D:C4Q2c94OtEvwDpj4H8zM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3036-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3036-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3036-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3036-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3036-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3036-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

3036 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe

pid process

1964 2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe

pid	process
3036	misid.exe

pid	process
1964	2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1964-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3036-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3036-27-0x0000000000500000-0x0000000000510000-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 4 IoCs

Processes:

2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe

description	pid	process	target process
PID 1964 wrote to memory of 3036	1964	2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe	misid.exe
PID 1964 wrote to memory of 3036	1964	2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe	misid.exe
PID 1964 wrote to memory of 3036	1964	2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe	misid.exe
PID 1964 wrote to memory of 3036	1964	2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_5211085867990cd9f7457e4f0e65c542_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:3036

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
73KB

MD5
85891055b8694e8a4c14ea448c720df1

SHA1
306ffef58cc8c20fcd8d1bb3f569a3d81365c2bb

SHA256
cdab805864c9b7744cf162fe7bef7621785a096640d2567a5c5ee08babcfda37

SHA512
dd413bf6ddd455e33350374018bf12617cbfabed892dba1a344f5fd85a7b2aec90efc9aea4c044caefcf9e7ace5abe9c178dd24b4a2275cbd9c34d9c441e25bb

Download Submit
memory/1964-0-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1964-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1964-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1964-8-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3036-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3036-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3036-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download