fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f

General

Target

fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe
Size

240KB
MD5

06b4b16ce0ad5d1be4ab1c30a7785ba0
SHA1

830a92afc80440e39dd3259ec6546f21adf89149
SHA256

fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f
SHA512

9b3ffded21b31f740b004cb499ce6987ce576a26b651ffc6670c72723f2b54daeaafa50f01094a2c1aa5205eec054c8ed496a8de06a2177e79797674e998bd0e
SSDEEP

3072:bNMbouT5aJyrnRDDoYSQu7zy9BK1RsRQB4FZEuZDxZzK5ATxrHgbJm5ZQYLhPm:BMbouT5HrRv1ZBcHGF7DT38s5ZBLhe

Score

9^/10

persistence ransomware

Malware Config

Signatures

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Drops startup file 1 IoCs

Processes:

explorer.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526932a.exe explorer.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\526932a.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*26932a = "C:\\Users\\Admin\\AppData\\Roaming\\526932a.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\526932 = "C:\\526932a\\526932a.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*26932 = "C:\\526932a\\526932a.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\526932a = "C:\\Users\\Admin\\AppData\\Roaming\\526932a.exe"	explorer.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

2 ip-addr.es
4 myexternalip.com
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

1076 vssadmin.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exeexplorer.exe

pid process

1504 fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe
1664 explorer.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 908 vssvc.exe
Token: SeRestorePrivilege 908 vssvc.exe
Token: SeAuditPrivilege 908 vssvc.exe

flow	ioc
2	ip-addr.es
4	myexternalip.com

pid	process
1076	vssadmin.exe

pid	process
1504	fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe
1664	explorer.exe

description	pid	process
Token: SeBackupPrivilege	908	vssvc.exe
Token: SeRestorePrivilege	908	vssvc.exe
Token: SeAuditPrivilege	908	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exeexplorer.exe

description	pid	process	target process
PID 1504 wrote to memory of 1664	1504	fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe	explorer.exe
PID 1504 wrote to memory of 1664	1504	fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe	explorer.exe
PID 1504 wrote to memory of 1664	1504	fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe	explorer.exe
PID 1504 wrote to memory of 1664	1504	fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe	explorer.exe
PID 1664 wrote to memory of 944	1664	explorer.exe	svchost.exe
PID 1664 wrote to memory of 944	1664	explorer.exe	svchost.exe
PID 1664 wrote to memory of 944	1664	explorer.exe	svchost.exe
PID 1664 wrote to memory of 944	1664	explorer.exe	svchost.exe
PID 1664 wrote to memory of 1076	1664	explorer.exe	vssadmin.exe
PID 1664 wrote to memory of 1076	1664	explorer.exe	vssadmin.exe
PID 1664 wrote to memory of 1076	1664	explorer.exe	vssadmin.exe
PID 1664 wrote to memory of 1076	1664	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe
"C:\Users\Admin\AppData\Local\Temp\fdc3f813aad6c05ec6707547d954508e023b6b05670815f60b2aba9ec089697f.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1504

C:\Windows\syswow64\explorer.exe
"C:\Windows\syswow64\explorer.exe"
2⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\syswow64\svchost.exe
-k netsvcs
3⤵
PID:944

C:\Windows\syswow64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1076

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:908

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

memory/944-61-0x0000000000000000-mapping.dmp

Download
memory/944-64-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/1076-62-0x0000000000000000-mapping.dmp

Download
memory/1504-54-0x0000000075FB1000-0x0000000075FB3000-memory.dmp

Filesize
8KB

Download
memory/1504-55-0x0000000000230000-0x0000000000246000-memory.dmp

Filesize
88KB

Download
memory/1504-59-0x0000000000400000-0x00000000038FC000-memory.dmp

Filesize
53.0MB

Download
memory/1504-65-0x0000000000400000-0x00000000038FC000-memory.dmp

Filesize
53.0MB

Download
memory/1664-56-0x0000000000000000-mapping.dmp

Download
memory/1664-58-0x0000000074CF1000-0x0000000074CF3000-memory.dmp

Filesize
8KB

Download
memory/1664-60-0x00000000000C0000-0x00000000000E5000-memory.dmp

Filesize
148KB

Download

Analysis

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