a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1

Analysis

max time kernel
64s
max time network
60s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 07:17

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General

Target

a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe
Size

115KB
MD5

f83811baceb47fee0563fc1b91f9e97f
SHA1

c8b2a2151803e3596d102bee8e518f21c5d3d852
SHA256

a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1
SHA512

03cc94e8c2cecd4e8244dc6ffb1b23aa31c40ef24460e0276531e61a109789cc9efe7d41afca41f59a16256cef79629eaa1c54ec6dd85d507b34a4027cd34123
SSDEEP

3072:cU143UTXqhlYDnU/+FpwXmR7Iq2+YlbWa3rdWuLqfUl:nXqfE7wX82ZLqfU

Score

8^/10

persistence vmprotect

Malware Config

Signatures

Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

explorer.exe8C4K5EKGB82A48E.exe

pid process

944 explorer.exe
820 8C4K5EKGB82A48E.exe

pid	process
944	explorer.exe
820	8C4K5EKGB82A48E.exe

VMProtect packed file 8 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
C:\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
C:\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
behavioral1/memory/944-59-0x000000013FB00000-0x0000000140395000-memory.dmp	vmprotect
\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
\Users\Admin\AppData\Roaming\explorer\explorer.exe	vmprotect
behavioral1/memory/944-64-0x000000013FB00000-0x0000000140395000-memory.dmp	vmprotect

Loads dropped DLL 5 IoCs

Processes:

cmd.exeWerFault.exea1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe

pid process

1472 cmd.exe
828 WerFault.exe
828 WerFault.exe
828 WerFault.exe
1160 a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe

pid	process
1472	cmd.exe
828	WerFault.exe
828	WerFault.exe
828	WerFault.exe
1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Windows\CurrentVersion\Run\explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer\\explorer.exe"	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

828 944 WerFault.exe explorer.exe

pid	pid_target	process	target process
828	944	WerFault.exe	explorer.exe

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

Processes:

8C4K5EKGB82A48E.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main	8C4K5EKGB82A48E.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	8C4K5EKGB82A48E.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	8C4K5EKGB82A48E.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

explorer.exe

pid process

944 explorer.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

8C4K5EKGB82A48E.exe

pid process

820 8C4K5EKGB82A48E.exe
820 8C4K5EKGB82A48E.exe

pid	process
944	explorer.exe

pid	process
820	8C4K5EKGB82A48E.exe
820	8C4K5EKGB82A48E.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.execmd.exeexplorer.exe

description	pid	process	target process
PID 1160 wrote to memory of 1472	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	cmd.exe
PID 1160 wrote to memory of 1472	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	cmd.exe
PID 1160 wrote to memory of 1472	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	cmd.exe
PID 1160 wrote to memory of 1472	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	cmd.exe
PID 1472 wrote to memory of 944	1472	cmd.exe	explorer.exe
PID 1472 wrote to memory of 944	1472	cmd.exe	explorer.exe
PID 1472 wrote to memory of 944	1472	cmd.exe	explorer.exe
PID 1472 wrote to memory of 944	1472	cmd.exe	explorer.exe
PID 944 wrote to memory of 828	944	explorer.exe	WerFault.exe
PID 944 wrote to memory of 828	944	explorer.exe	WerFault.exe
PID 944 wrote to memory of 828	944	explorer.exe	WerFault.exe
PID 1160 wrote to memory of 820	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	8C4K5EKGB82A48E.exe
PID 1160 wrote to memory of 820	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	8C4K5EKGB82A48E.exe
PID 1160 wrote to memory of 820	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	8C4K5EKGB82A48E.exe
PID 1160 wrote to memory of 820	1160	a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe	8C4K5EKGB82A48E.exe

C:\Users\Admin\AppData\Local\Temp\a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe
"C:\Users\Admin\AppData\Local\Temp\a1bdd92ff181ec9f2acb12ced6b8b0e2fb63be305c6ba7ddcac3b8a3cb2577d1.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1160

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c start C:\Users\Admin\AppData\Roaming\explorer\explorer.exe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1472

C:\Users\Admin\AppData\Roaming\explorer\explorer.exe
C:\Users\Admin\AppData\Roaming\explorer\explorer.exe
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 944 -s 56
4⤵
- Loads dropped DLL
- Program crash
PID:828

C:\Users\Admin\AppData\Local\Temp\8C4K5EKGB82A48E.exe
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <HTML><HEAD> <TITLE>509 Bandwidth Limit Exceeded</TITLE> </HEAD><BODY> <H1>Bandwidth Limit Exceeded</H1> The server is temporarily unable to service your request due to the site owner reaching his/her bandwidth limit. Please try again later. </BODY></HTML>
2⤵
- Executes dropped EXE
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
PID:820

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

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\Admin\AppData\Local\Temp\8C4K5EKGB82A48E.exe
Filesize
8KB

MD5
8719ce641e7c777ac1b0eaec7b5fa7c7

SHA1
c04de52cb511480cc7d00d67f1d9e17b02d6406b

SHA256
6283ac6ecbf4c4038cf44896dd221c7c11152bac77273709330409032c3e72ea

SHA512
7be5bd6d2342dd02818f1979e7e74a6376658711ac82a59b2af1a67207cfd3c7416b657af01216473b15132e4aa5c6675f0eb8ee6343192c7dfc4a5249ccaa97

Download Submit
C:\Users\Admin\AppData\Local\Temp\8C4K5EKGB82A48E.exe
Filesize
8KB

MD5
8719ce641e7c777ac1b0eaec7b5fa7c7

SHA1
c04de52cb511480cc7d00d67f1d9e17b02d6406b

SHA256
6283ac6ecbf4c4038cf44896dd221c7c11152bac77273709330409032c3e72ea

SHA512
7be5bd6d2342dd02818f1979e7e74a6376658711ac82a59b2af1a67207cfd3c7416b657af01216473b15132e4aa5c6675f0eb8ee6343192c7dfc4a5249ccaa97

Download Submit
C:\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
C:\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
\Users\Admin\AppData\Local\Temp\8C4K5EKGB82A48E.exe
Filesize
8KB

MD5
8719ce641e7c777ac1b0eaec7b5fa7c7

SHA1
c04de52cb511480cc7d00d67f1d9e17b02d6406b

SHA256
6283ac6ecbf4c4038cf44896dd221c7c11152bac77273709330409032c3e72ea

SHA512
7be5bd6d2342dd02818f1979e7e74a6376658711ac82a59b2af1a67207cfd3c7416b657af01216473b15132e4aa5c6675f0eb8ee6343192c7dfc4a5249ccaa97

Download Submit
\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
\Users\Admin\AppData\Roaming\explorer\explorer.exe
Filesize
5.2MB

MD5
dee1568dc4d523e4aff5c7563b26887c

SHA1
565a8f3d02746fb203c5a7e2777211bf33cf656b

SHA256
f7cbf79fce9ca7d06745604a44c6b2541af476cdd8f5853bf1dbf23213eb3d2b

SHA512
0e593e23f5cfbf3bf0cc07373bb013911e9c2068cfad8e666c69173afbe29d06a0635dc32dfa6baca153db2e1de25772cccbc5f63d49d19bc4d18b93f7c97ab2

Download Submit
memory/820-66-0x0000000000000000-mapping.dmp

Download
memory/820-69-0x000000013F550000-0x000000013F556000-memory.dmp

Filesize
24KB

Download
memory/820-70-0x000007FEFBB21000-0x000007FEFBB23000-memory.dmp

Filesize
8KB

Download
memory/820-71-0x000000001AE29000-0x000000001AE48000-memory.dmp

Filesize
124KB

Download
memory/828-60-0x0000000000000000-mapping.dmp

Download
memory/944-64-0x000000013FB00000-0x0000000140395000-memory.dmp

Filesize
8.6MB

Download
memory/944-59-0x000000013FB00000-0x0000000140395000-memory.dmp

Filesize
8.6MB

Download
memory/944-56-0x0000000000000000-mapping.dmp

Download
memory/1472-54-0x0000000000000000-mapping.dmp

Download