40e99487d3533b79acfe046e8a72fe240ff204784fde24311450c3e33419e492

General

Target

2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe
Size

86KB
MD5

8c242653008be4f6f589dbe7c6db8164
SHA1

db4b3a632a9999ad066af03db1fb2cecdd5d854f
SHA256

40e99487d3533b79acfe046e8a72fe240ff204784fde24311450c3e33419e492
SHA512

13dcd677becd52a7337e353f60880400a0e3f06c693c2081ac19ac3e193953c421921f6ebd79b1e328225532eed87413047b29169515fde90e054912481b60f0
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1Y:zCsanOtEvwDpj+

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/2180-12-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1260-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1260-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012286-11.dat	CryptoLocker_set1
behavioral1/memory/2180-12-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1260-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1260-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012286-11.dat	UPX
behavioral1/memory/2180-12-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	UPX
behavioral1/memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1260-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1260-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1260	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2180	2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012286-11.dat	upx
behavioral1/memory/2180-12-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	upx
behavioral1/memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1260-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1260-27-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 2180 wrote to memory of 1260	2180	2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe	28
PID 2180 wrote to memory of 1260	2180	2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe	28
PID 2180 wrote to memory of 1260	2180	2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe	28
PID 2180 wrote to memory of 1260	2180	2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_8c242653008be4f6f589dbe7c6db8164_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2180
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1260

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
86KB

MD5
26b7e44140a2bbc3e03bc35a39a2020b

SHA1
2d166069d3119dd17a73eb9cbbfb61ec4bec182e

SHA256
7c479eeed927afd5ff04b96ff98cd44dc56fe69a80624fb45e9a330bb6bd2e38

SHA512
fce5f47dfe06e8d28411e68255696db9e636f00108fabd89aefdb24746f1fb089479305a2a9562dcb11024c96be2336b25e9e74074f234d6ce0d3f8b628f6b27

Download Submit
memory/1260-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1260-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1260-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1260-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2180-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2180-1-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2180-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2180-9-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/2180-12-0x0000000001DD0000-0x0000000001DE0000-memory.dmp

Filesize
64KB

Download
memory/2180-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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