4aab38225d8fadc50558cc7a57c1161a3417bb80449dd09ec5ea407c6bdf9228

General

Target

2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe
Size

94KB
MD5

bfe2dd7d0ac2a5f21783b3988e1970c1
SHA1

c8f5d1b2d9775015d7cc2443fed8342f6ccee153
SHA256

4aab38225d8fadc50558cc7a57c1161a3417bb80449dd09ec5ea407c6bdf9228
SHA512

23b439c9972cab4661e213077c3d3ca4806a9e911084c4600850007f12bbd4fb507ff86ba4285c19781d76ae207377f0a1543c9251033691d674ffb7e5db3f8c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/kC:zCsanOtEvwDpjB1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2880-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2140-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2880-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2880-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2140-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2880-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/2880-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2140-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2880-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2880 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe

pid process

2140 2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe

pid	process
2880	misid.exe

pid	process
2140	2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/2880-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2140-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2880-26-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe

description	pid	process	target process
PID 2140 wrote to memory of 2880	2140	2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe	misid.exe
PID 2140 wrote to memory of 2880	2140	2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe	misid.exe
PID 2140 wrote to memory of 2880	2140	2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe	misid.exe
PID 2140 wrote to memory of 2880	2140	2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_bfe2dd7d0ac2a5f21783b3988e1970c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2140

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2880

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\misid.exe
Filesize
95KB

MD5
3e8f222c563f0c8d1eb2516cc890632d

SHA1
5292bde455f5ae432a6c1b5bf01949834190f99f

SHA256
d714aa14f75a65e522e38f0455620755b4d918155e367efd5bd5b45bd944a6a4

SHA512
5be85a9e8dc53c47b906ef6a987059a8a9e35dd29cfe3f549ef943712f9b7695398cd87915d3ca1239bad1017b863869b83371e870deb7ed387bd45125c061e5

Download Submit
memory/2140-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2140-1-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2140-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2140-9-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2140-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2880-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2880-18-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/2880-25-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2880-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads