00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0

General

Target

00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe
Size

129KB
MD5

aea8ab12edf294ddb2804d6618fdd247
SHA1

96fb7d2e3ad9fe434a66abb15b26dd4e40aa5d4b
SHA256

00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0
SHA512

bee50fb9f66126ef51593f80c364f82df301c5e96ed380a6cf90bb67a50d3bb42adf4a3c0214512455061e8952fd97500e82a2d3dbe27e111e597e2cc6ef783d
SSDEEP

3072:E2RkHzd/EtzAAj1reAXyDTdWV1oqCgQfBUnPy8LWVBBhj:E2idEt8ABrKDTdWV1oqCgQfBUPy8LWVh

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\b0cdbf53.exe explorer.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b0cdbf53.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-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\b0cdbf53 = "C:\\Users\\Admin\\AppData\\Roaming\\b0cdbf53.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*0cdbf53 = "C:\\Users\\Admin\\AppData\\Roaming\\b0cdbf53.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\b0cdbf5 = "C:\\b0cdbf53\\b0cdbf53.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*0cdbf5 = "C:\\b0cdbf53\\b0cdbf53.exe"	explorer.exe

Looks up external IP address via web service 4 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
6 myexternalip.com
83 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

888 vssadmin.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exeexplorer.exe

pid process

1064 00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe
1036 explorer.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 432 vssvc.exe
Token: SeRestorePrivilege 432 vssvc.exe
Token: SeAuditPrivilege 432 vssvc.exe

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

pid	process
888	vssadmin.exe

pid	process
1064	00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe
1036	explorer.exe

description	pid	process
Token: SeBackupPrivilege	432	vssvc.exe
Token: SeRestorePrivilege	432	vssvc.exe
Token: SeAuditPrivilege	432	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exeexplorer.exe

description	pid	process	target process
PID 1064 wrote to memory of 1036	1064	00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe	explorer.exe
PID 1064 wrote to memory of 1036	1064	00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe	explorer.exe
PID 1064 wrote to memory of 1036	1064	00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe	explorer.exe
PID 1064 wrote to memory of 1036	1064	00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe	explorer.exe
PID 1036 wrote to memory of 1832	1036	explorer.exe	svchost.exe
PID 1036 wrote to memory of 1832	1036	explorer.exe	svchost.exe
PID 1036 wrote to memory of 1832	1036	explorer.exe	svchost.exe
PID 1036 wrote to memory of 1832	1036	explorer.exe	svchost.exe
PID 1036 wrote to memory of 888	1036	explorer.exe	vssadmin.exe
PID 1036 wrote to memory of 888	1036	explorer.exe	vssadmin.exe
PID 1036 wrote to memory of 888	1036	explorer.exe	vssadmin.exe
PID 1036 wrote to memory of 888	1036	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe
"C:\Users\Admin\AppData\Local\Temp\00735e4ad3e9a9a5b3551dce371248327e74ef3c25edca343b063c4914a8afb0.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1064

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:1036

C:\Windows\syswow64\svchost.exe
-k netsvcs
3⤵
PID:1832

C:\Windows\syswow64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:888

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:432

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/888-59-0x0000000000000000-mapping.dmp

Download
memory/1036-54-0x0000000000000000-mapping.dmp

Download
memory/1036-55-0x0000000075BB1000-0x0000000075BB3000-memory.dmp

Filesize
8KB

Download
memory/1036-56-0x0000000074EC1000-0x0000000074EC3000-memory.dmp

Filesize
8KB

Download
memory/1036-57-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/1832-58-0x0000000000000000-mapping.dmp

Download
memory/1832-61-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/1832-62-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download

Analysis

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