c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d

General

Target

c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe
Size

123KB
MD5

d1f9c714cf20a56b8d9098576b414a54
SHA1

0fa4bfde84904faa39e495719ee2b8082726cd69
SHA256

c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d
SHA512

8aac5846d4ee49e550064c2c10bd0ec3ee0606cef67654b88635c5bf51da97aa59a7ad29b48b0bbe4b1f3e429691e175824e117d957183fabcb0f6c1a00737e0

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

BkDSMcdxPrep.exerARjfXkNSlan.exe

pid process

3660 BkDSMcdxPrep.exe
3604 rARjfXkNSlan.exe

pid	process
3660	BkDSMcdxPrep.exe
3604	rARjfXkNSlan.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\International\Geo\Nation	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MusNotifyIcon.exe

description	ioc	process
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotifyIcon.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotifyIcon.exe

Modifies data under HKEY_USERS 19 IoCs

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCdnBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyCacheHostBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyGroupBytes = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Settings	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DODownloadMode = "1"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\MonthID = "2"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Config\DownloadMode_BackCompat = "1"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\UploadMonthlyLanBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyInternetBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkBps = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateBkCnt = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyLinkLocalBytes = "0"	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-20\SOFTWARE\Microsoft\Windows\CurrentVersion\DeliveryOptimization\Usage\DownloadMonthlyRateFrBps = "0"	svchost.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe

description	pid	process	target process
PID 3476 wrote to memory of 3660	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	BkDSMcdxPrep.exe
PID 3476 wrote to memory of 3660	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	BkDSMcdxPrep.exe
PID 3476 wrote to memory of 3660	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	BkDSMcdxPrep.exe
PID 3476 wrote to memory of 3604	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	rARjfXkNSlan.exe
PID 3476 wrote to memory of 3604	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	rARjfXkNSlan.exe
PID 3476 wrote to memory of 3604	3476	c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe	rARjfXkNSlan.exe

C:\Users\Admin\AppData\Local\Temp\c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe
"C:\Users\Admin\AppData\Local\Temp\c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3476

C:\Users\Admin\AppData\Local\Temp\BkDSMcdxPrep.exe
"C:\Users\Admin\AppData\Local\Temp\BkDSMcdxPrep.exe" 9 REP
2⤵
- Executes dropped EXE
PID:3660

C:\Users\Admin\AppData\Local\Temp\rARjfXkNSlan.exe
"C:\Users\Admin\AppData\Local\Temp\rARjfXkNSlan.exe" 8 LAN
2⤵
- Executes dropped EXE
PID:3604

C:\Windows\system32\MusNotifyIcon.exe
%systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
1⤵
- Checks processor information in registry
PID:2456

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p
1⤵
- Modifies data under HKEY_USERS
PID:1896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

MD5
d1f9c714cf20a56b8d9098576b414a54

SHA1
0fa4bfde84904faa39e495719ee2b8082726cd69

SHA256
c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d

SHA512
8aac5846d4ee49e550064c2c10bd0ec3ee0606cef67654b88635c5bf51da97aa59a7ad29b48b0bbe4b1f3e429691e175824e117d957183fabcb0f6c1a00737e0

Download Submit
C:\Users\Admin\AppData\Local\Temp\BkDSMcdxPrep.exe

MD5
d1f9c714cf20a56b8d9098576b414a54

SHA1
0fa4bfde84904faa39e495719ee2b8082726cd69

SHA256
c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d

SHA512
8aac5846d4ee49e550064c2c10bd0ec3ee0606cef67654b88635c5bf51da97aa59a7ad29b48b0bbe4b1f3e429691e175824e117d957183fabcb0f6c1a00737e0

Download Submit
C:\Users\Admin\AppData\Local\Temp\rARjfXkNSlan.exe

MD5
d1f9c714cf20a56b8d9098576b414a54

SHA1
0fa4bfde84904faa39e495719ee2b8082726cd69

SHA256
c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d

SHA512
8aac5846d4ee49e550064c2c10bd0ec3ee0606cef67654b88635c5bf51da97aa59a7ad29b48b0bbe4b1f3e429691e175824e117d957183fabcb0f6c1a00737e0

Download Submit
C:\Users\Admin\AppData\Local\Temp\rARjfXkNSlan.exe

MD5
d1f9c714cf20a56b8d9098576b414a54

SHA1
0fa4bfde84904faa39e495719ee2b8082726cd69

SHA256
c0784c03bfbe0ea483b6ae318d51de57ae1019cec8b6a12cbd58f66d59fd545d

SHA512
8aac5846d4ee49e550064c2c10bd0ec3ee0606cef67654b88635c5bf51da97aa59a7ad29b48b0bbe4b1f3e429691e175824e117d957183fabcb0f6c1a00737e0

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads