e9d1089c8cedadb273370d6305eb708311e9366209a4f0ac0487b3b03b0a8728

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-01-2024 04:37

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General

Target

2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe
Size

100KB
MD5

730fa93290faf67196a8ded2ffdda599
SHA1

5e89f1ce17719bd205b886e4e7060a38f713a41f
SHA256

e9d1089c8cedadb273370d6305eb708311e9366209a4f0ac0487b3b03b0a8728
SHA512

123a2e9a950e51352d3676b723ceda7eb5e2627758c242d7be8edd01cddf045ab7e23e5ddd6156d0fe0164640ed80f2bad5fc6f6f828526e6943f1b5d07f3309
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRiWjzUNoB:i5nkFGMOtEvwDpjNbwQEIikgNS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000132dc-16.dat	CryptoLocker_rule2
behavioral1/memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1988-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2860-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1988-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2860-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x000b0000000132dc-16.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/1988-14-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2860-27-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
2860	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1988	2024-01-25_730fa93290faf67196a8ded2ffdda599_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 1988 wrote to memory of 2860	1988	2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe	28
PID 1988 wrote to memory of 2860	1988	2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe	28
PID 1988 wrote to memory of 2860	1988	2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe	28
PID 1988 wrote to memory of 2860	1988	2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_730fa93290faf67196a8ded2ffdda599_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2860

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
100KB

MD5
42aebd7f12914f0ee77bec30f424c386

SHA1
71e3f158ca5660e8c330dd51c1544d9182cfdc13

SHA256
3e2103cde436d6aa62cb3918fb827c9b1458bcea6d28c39651ab6ee43189b0d2

SHA512
78d595150fcb6f9f74c804dbd6a7b9f36da32678a1a7739330663ced0f054e381cb61127c6b302da12d1490a5df57e2dd92194d11c2d24b7f2e8bdd5cd93c156

Download Submit
memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1988-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1988-2-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1988-5-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1988-15-0x0000000000690000-0x000000000069F000-memory.dmp

Filesize
60KB

Download
memory/1988-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2860-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2860-19-0x0000000000210000-0x0000000000216000-memory.dmp

Filesize
24KB

Download
memory/2860-21-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/2860-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download