60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5

General

Target

2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
Size

80KB
MD5

be781e47ba551a56e25f87c1859f0345
SHA1

5edae0dda6a199e2f35c6325b8d87f778c3ee04f
SHA256

60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5
SHA512

cbdbd2f57663fd1aa4c1976c84730c2a91e4da9f92043c100300368d30ec77581d874a590b4b54ef7bb6a538fbfc6289724b79ff55d831d62cf97a239fdd2f5c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyTghK:zCsanOtEvwDpjc

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012248-11.dat	CryptoLocker_rule2
behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012248-11.dat	CryptoLocker_set1
behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012248-11.dat	UPX
behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp	UPX
behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2640	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
392	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral1/memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012248-11.dat	upx
behavioral1/memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp	upx
behavioral1/memory/2640-27-0x0000000000500000-0x0000000000510000-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 392 wrote to memory of 2640	392	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	28
PID 392 wrote to memory of 2640	392	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	28
PID 392 wrote to memory of 2640	392	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	28
PID 392 wrote to memory of 2640	392	2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:392
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2640

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
80KB

MD5
88f9b45324dedbcef5ccb066760e72bf

SHA1
0c7d18e66ea4c726a8394d050c8632592c5659dc

SHA256
ec38e49db749d13261425daa10b01761761528f4bcf67340eac62a0b43ddc7d1

SHA512
361ae0caafbdb63e1b6d4b0b154e5af090498e6fa5edb56feb53379a7819155e8263c9c64687cc9d81a1b7c55a610d3819c773e43bf0c3560362a2047ec3c598

Download Submit
memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/392-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/392-3-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/392-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp

Filesize
64KB

Download
memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2640-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2640-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

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