61a04edd1ff234f38a1bf9b78e1da63de8feba59da2e0c0e3cf92bb1263ee1f0

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/03/2024, 12:39

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General

Target

2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe
Size

67KB
MD5

85970c1b26796bedc4b15dd381a1c24c
SHA1

9d18af4372c8bfe94d9232fdf9596460fe11a7db
SHA256

61a04edd1ff234f38a1bf9b78e1da63de8feba59da2e0c0e3cf92bb1263ee1f0
SHA512

d6092b35be42edc9c46eb18690de6f894e9852f183175faeab89d05a5053c8ae4a0e751593e24299792caffa8d20924d4b90dde99046edc5efe61412fe968f6d
SSDEEP

768:nj+WxauFzs2yhP7GkhO2tOOtEvwDpje9+4U9HueDgaRWDCSMzTZ:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2020-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012241-25.dat	CryptoLocker_rule2
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2120-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2020-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2120-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2020-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012241-25.dat	UPX
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2120-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2120	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2020	2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2020-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012241-25.dat	upx
behavioral1/memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2120-26-0x0000000000500000-0x0000000000510000-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 2020 wrote to memory of 2120	2020	2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe	28
PID 2020 wrote to memory of 2120	2020	2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe	28
PID 2020 wrote to memory of 2120	2020	2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe	28
PID 2020 wrote to memory of 2120	2020	2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-12_85970c1b26796bedc4b15dd381a1c24c_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2120

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

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

Filesize
67KB

MD5
e9896667158cd3439cfc47c7be9540c7

SHA1
05093e3a204979508434d862c245cf29410997cf

SHA256
764d88a0939b0f158dee33ce9bcff5cfa775e47ce0a6cdce91b987b68d16a210

SHA512
fc22d822208fc781d74648c4a582e3fecb2c2f7ce2b53512509c0f5650f853321ffa42aa70722740d78f80f63cc2da27cafbad0d595e424e69a90c86117be174

Download Submit
memory/2020-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2020-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2020-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2020-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2020-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2020-16-0x00000000020A0000-0x00000000020B0000-memory.dmp

Filesize
64KB

Download
memory/2120-19-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2120-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2120-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download