26dd89268839f81f51f5d50e6855bf457d4f916bedbcf2341d1fa235134a13a1

Resubmissions

25-11-2022 23:32

221125-3h9z4aeg73 1

25-11-2022 23:11

221125-259r6sgg3z 10

Analysis

max time kernel
152s
max time network
78s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25-11-2022 23:11

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Report Analysis Logs

General

Target

campaign_312-633aed5da8a1e15dd296b1e408bd2ee7.7z
Size

7.2MB
MD5

633aed5da8a1e15dd296b1e408bd2ee7
SHA1

be1a9bec12fde32b4a17d245346c01145e89a810
SHA256

26dd89268839f81f51f5d50e6855bf457d4f916bedbcf2341d1fa235134a13a1
SHA512

0c620a191d97880421b6c86d53c7d98a2b52b218e521f0dd6451bf8d8420c3a029c33deb74b8019bd490577cc20b7a94f8338d8b15d97cc9116fffb9b1683a74
SSDEEP

98304:i8p2E3sfzRHjpBq+AfuQWzB7M+TdNocYea5Mv4iruwNPD9r0RO1si8XEc7HOFcM9:lp2EERuLfrW9ckPrVN79AXvuFcgSUmR2

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.7z\ = "7z_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.7z	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\7z_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

828 AcroRd32.exe
828 AcroRd32.exe
828 AcroRd32.exe

pid	process
828	AcroRd32.exe
828	AcroRd32.exe
828	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1704 wrote to memory of 1200	1704	cmd.exe	rundll32.exe
PID 1704 wrote to memory of 1200	1704	cmd.exe	rundll32.exe
PID 1704 wrote to memory of 1200	1704	cmd.exe	rundll32.exe
PID 1200 wrote to memory of 828	1200	rundll32.exe	AcroRd32.exe
PID 1200 wrote to memory of 828	1200	rundll32.exe	AcroRd32.exe
PID 1200 wrote to memory of 828	1200	rundll32.exe	AcroRd32.exe
PID 1200 wrote to memory of 828	1200	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\campaign_312-633aed5da8a1e15dd296b1e408bd2ee7.7z
1⤵
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\campaign_312-633aed5da8a1e15dd296b1e408bd2ee7.7z
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1200

C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\campaign_312-633aed5da8a1e15dd296b1e408bd2ee7.7z"
3⤵
- Suspicious use of SetWindowsHookEx
PID:828

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/828-81-0x0000000000000000-mapping.dmp

Download
memory/828-82-0x00000000758C1000-0x00000000758C3000-memory.dmp

Filesize
8KB

Download
memory/1200-76-0x0000000000000000-mapping.dmp

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memory/1704-54-0x000007FEFBE11000-0x000007FEFBE13000-memory.dmp

Filesize
8KB

Download