2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a

Analysis

max time kernel
9s
max time network
141s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
15-11-2022 03:00

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General

Target

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Size

24KB
MD5

046fb6d83046827da18086aa6ac523aa
SHA1

945ceb168b4b5f207aa9e516584c32de29bb650c
SHA256

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a
SHA512

3c9477c45f95b7815729d7e7ced5427e176d929d8f31f163de5b502e9189ddd5d07a88d6b3b9323a99898672587ba7b071dd8f3691690191f7a4907f26b170b3
SSDEEP

192:8FES6pYk/gvPNJv+mv+kAUoynYlLvJpNNwD1iT9fF73At4EaQ9r:8v73NvViTkaQl

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:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

Downloads MZ/PE file
Executes dropped EXE 4 IoCs

Processes:

k4.exek4.exek4.exek4.exe

pid process

2028 k4.exe
2036 k4.exe
2028 k4.exe
2036 k4.exe

pid	process
2028	k4.exe
2036	k4.exe
2028	k4.exe
2036	k4.exe

Loads dropped DLL 4 IoCs

Processes:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

pid	process
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

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

System Information Discovery
T1082
Kills process with taskkill 2 IoCs
evasion

Processes:

taskkill.exetaskkill.exe

pid process

852 taskkill.exe
852 taskkill.exe

pid	process
852	taskkill.exe
852	taskkill.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

k4.exetaskkill.exek4.exetaskkill.exe

description	pid	process
Token: SeLoadDriverPrivilege	2036	k4.exe
Token: SeDebugPrivilege	852	taskkill.exe
Token: SeLoadDriverPrivilege	2036	k4.exe
Token: SeDebugPrivilege	852	taskkill.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

pid	process
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.execmd.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.execmd.exe

description	pid	process	target process
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2028	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 2036	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	k4.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1084 wrote to memory of 1756	1084	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe	cmd.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe
PID 1756 wrote to memory of 852	1756	cmd.exe	taskkill.exe

System policy modification 1 TTPs 6 IoCs

evasion

Modify Registry

T1112

Processes:

2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe

C:\Users\Admin\AppData\Local\Temp\2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
"C:\Users\Admin\AppData\Local\Temp\2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1084

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
PID:2028

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /t /im k4.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:852

C:\Users\Admin\AppData\Local\Temp\2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe
"C:\Users\Admin\AppData\Local\Temp\2086b8409ea31624c1d25581d4729ad48f3cde3a3b4969f2c9b79ca6ae6c354a.exe"
1⤵
- UAC bypass
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1084

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe
2⤵
- Executes dropped EXE
PID:2028

C:\Users\Public\Documents\k4.exe
C:/Users/Public/Documents/k4.exe /D
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2036

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c taskkill /f /t /im k4.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\taskkill.exe
taskkill /f /t /im k4.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:852

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\Class.dll
Filesize
47KB

MD5
489c64a28a4295f0927e530632af0c34

SHA1
7787a8a54513c590bb9ac8539229efc508cee774

SHA256
3bccac3eb915a400ada9ef06c9b576a330e217a5a35f8c8c87612c0273b276c6

SHA512
c82f242762f0bff06fc85fa4710681fee7538643da546990bca19befcd375ac03e5cf7fa4acc234bee401df4be95ac33933b0c6f6adb2868c23ac3cbe9fd806f

Download Submit
\Users\Public\Documents\Class.dll
Filesize
47KB

MD5
489c64a28a4295f0927e530632af0c34

SHA1
7787a8a54513c590bb9ac8539229efc508cee774

SHA256
3bccac3eb915a400ada9ef06c9b576a330e217a5a35f8c8c87612c0273b276c6

SHA512
c82f242762f0bff06fc85fa4710681fee7538643da546990bca19befcd375ac03e5cf7fa4acc234bee401df4be95ac33933b0c6f6adb2868c23ac3cbe9fd806f

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/852-65-0x0000000000000000-mapping.dmp

Download
memory/852-65-0x0000000000000000-mapping.dmp

Download
memory/1084-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1084-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1756-64-0x0000000000000000-mapping.dmp

Download
memory/1756-64-0x0000000000000000-mapping.dmp

Download
memory/2028-57-0x0000000000000000-mapping.dmp

Download
memory/2028-59-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

Filesize
8KB

Download
memory/2028-59-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

Filesize
8KB

Download
memory/2028-57-0x0000000000000000-mapping.dmp

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memory/2036-61-0x0000000000000000-mapping.dmp

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memory/2036-61-0x0000000000000000-mapping.dmp

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