31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399

Analysis

max time kernel
14s
max time network
155s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
12-10-2022 14:41

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General

Target

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Size

32KB
MD5

b1a76512bd2449210a38aad628f5e1a3
SHA1

e2d5c4629742a37579eba17c722fd8177ea4a410
SHA256

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399
SHA512

24f6d10f7110e6b4855e6410384bdca6b37fe47b98c5a4001faccb7b8817dd961b06dc4eac1ead4989782413aff942f1d4adb2b5f286a310cd9bfe355a5eb46b
SSDEEP

192:60hg42Nzd2GQ/0jqEtJ2KLNGEt2hoynrLEgH9e2tnwRmd8MFA93M3pkR:60CvNwRtONGThlNde2tnwwd5ASc

Score

10^/10

evasion trojan

Malware Config

Signatures

UAC bypass 3 TTPs 6 IoCs

evasion trojan

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

k4.exek4.exek4.exek4.exe

pid process

1868 k4.exe
1524 k4.exe
1868 k4.exe
1524 k4.exe

pid	process
1868	k4.exe
1524	k4.exe
1868	k4.exe
1524	k4.exe

Loads dropped DLL 4 IoCs

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

pid	process
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

k4.exek4.exe

description pid process

Token: SeLoadDriverPrivilege 1524 k4.exe
Token: SeLoadDriverPrivilege 1524 k4.exe

description	pid	process
Token: SeLoadDriverPrivilege	1524	k4.exe
Token: SeLoadDriverPrivilege	1524	k4.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

pid	process
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

description	pid	process	target process
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1868	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1524	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	k4.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe
PID 1304 wrote to memory of 1916	1304	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe	cmd.exe

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

Processes:

31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe

C:\Users\Admin\AppData\Local\Temp\31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
"C:\Users\Admin\AppData\Local\Temp\31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1304

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
PID:1868

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1524

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
PID:1916

C:\Users\Admin\AppData\Local\Temp\31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe
"C:\Users\Admin\AppData\Local\Temp\31187424e25004f7580b8defbe516ab09a6e5a4eb9e39ab1721279c5ecce8399.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1304

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
PID:1868

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1524

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
PID:1916

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
C:\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
\Users\Public\Documents\RDSv1.dll
Filesize
40KB

MD5
2c17ae07feaf970be073135b9dc5318e

SHA1
f425aee18136879afeb4931aa9eed777d595f2a6

SHA256
7649bb85be19e09b67a581b0a988393328984f00f4bb3fb60a4dacfb0b773cf5

SHA512
9f4dafb5f8e650b01255b1df25c80af76775736634dc846920ddf3d3165ece81d70d2860c9c73e1e146592bf5ded61ed36b3980283e23e5d705cfd4ae576cb6b

Download Submit
\Users\Public\Documents\RDSv1.dll
Filesize
40KB

MD5
2c17ae07feaf970be073135b9dc5318e

SHA1
f425aee18136879afeb4931aa9eed777d595f2a6

SHA256
7649bb85be19e09b67a581b0a988393328984f00f4bb3fb60a4dacfb0b773cf5

SHA512
9f4dafb5f8e650b01255b1df25c80af76775736634dc846920ddf3d3165ece81d70d2860c9c73e1e146592bf5ded61ed36b3980283e23e5d705cfd4ae576cb6b

Download Submit
\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
\Users\Public\Documents\k4.exe
Filesize
892KB

MD5
33e29221e2825001d32f78632217d250

SHA1
9122127fc91790a1edb78003e9b58a9b00355ed5

SHA256
65d0b20a4dc4911fbb91683eb6488d3d3493fa4584bbdfb4e942f203bef0030d

SHA512
01d5c6ded3a83d81371e94fefb1debabb1d003c86ab3cf7145d28fb15fcfd4f8b763f6711f99c5afd9bf90f02a7af993efa5945d4f8bb6a3649b5fd86414ae93

Download Submit
memory/1304-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

Filesize
8KB

Download
memory/1304-54-0x00000000762E1000-0x00000000762E3000-memory.dmp

Filesize
8KB

Download
memory/1524-61-0x0000000000000000-mapping.dmp

Download
memory/1524-61-0x0000000000000000-mapping.dmp

Download
memory/1868-59-0x000007FEFC211000-0x000007FEFC213000-memory.dmp

Filesize
8KB

Download
memory/1868-59-0x000007FEFC211000-0x000007FEFC213000-memory.dmp

Filesize
8KB

Download
memory/1868-57-0x0000000000000000-mapping.dmp

Download
memory/1868-57-0x0000000000000000-mapping.dmp

Download
memory/1916-64-0x0000000000000000-mapping.dmp

Download
memory/1916-64-0x0000000000000000-mapping.dmp

Download