f0288830045f8605da293d536aa041696b00e1bc8a4fe8b878073eb583e106ea

General

Target

2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe
Size

80KB
MD5

b6ff6c2df4e769c6c4ecd21bacf558e1
SHA1

8aeef753a80fbcb7be72593695754eff15af5a0b
SHA256

f0288830045f8605da293d536aa041696b00e1bc8a4fe8b878073eb583e106ea
SHA512

ada9b063db1736be6c38406e775018ebd89f7d159859fe4de3fcd35a84455acb900c3e3857bd0e8ab1fca6aa03baba9c7dec41ff6f5888e22cb432fca38a790c
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QF:zCsanOtEvwDpjR

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2228-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral1/memory/2228-12-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2216-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2216-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2228-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral1/memory/2228-12-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2216-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2216-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2228-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\misid.exe	UPX
behavioral1/memory/2228-12-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/2216-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2216-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2216 misid.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe

pid process

2228 2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe

pid	process
2216	misid.exe

pid	process
2228	2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2228-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\misid.exe	upx
behavioral1/memory/2228-12-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/2216-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2216-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe

description	pid	process	target process
PID 2228 wrote to memory of 2216	2228	2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe	misid.exe
PID 2228 wrote to memory of 2216	2228	2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe	misid.exe
PID 2228 wrote to memory of 2216	2228	2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe	misid.exe
PID 2228 wrote to memory of 2216	2228	2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6ff6c2df4e769c6c4ecd21bacf558e1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Executes dropped EXE
PID:2216

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

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Downloads

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

Filesize
81KB

MD5
2e649b0d63563a7ff454c21ccd1d30e0

SHA1
5ff58525ee6d958db83f8e54b7abe7309f910fb8

SHA256
37444e556cbc706dfdfe4c3a2db77295de171750eb60133d4ff0401fae1c23ce

SHA512
90a64512b9834d5eaa1e32b89540150a0782ffccf80727e163df4a4703e0d0ac066849343294c812c8819c923d010bf1c688937703b5f728e5180fb626991222

Download Submit
memory/2216-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2216-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2216-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2216-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2228-0-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2228-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2228-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2228-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2228-12-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/2228-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads