578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f

Analysis

max time kernel
206s
max time network
214s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 02:16

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General

Target

578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe
Size

247KB
MD5

0b9d856537907a64e03f062ffd07f359
SHA1

872a99dea9d00b41e1682b933112ae7196c68576
SHA256

578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f
SHA512

96f8d1f83e5e1b42cd38d12e6543b88a455e2fdb1543332e8948088bedbe471ea8cb889bf62a33e1b23cae5ae16e7f4df37081a56195d5b60175316f150134d1
SSDEEP

3072:CJrmLTtxl11Ebqb7COdltZT2/CaYUXkaSXw+UA8rvXaxIDbApEhh+HwK12x:CJ0T113bT4Qq+UAiWIfApEhh+HT1

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

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\695f71cc.exe	explorer.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*95f71c = "C:\\695f71cc\\695f71cc.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\695f71cc = "C:\\Users\\Admin\\AppData\\Roaming\\695f71cc.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*95f71cc = "C:\\Users\\Admin\\AppData\\Roaming\\695f71cc.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\695f71c = "C:\\695f71cc\\695f71cc.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.

flow	ioc
8	myexternalip.com
3	ip-addr.es

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

pid	Process
1404	vssadmin.exe

Suspicious behavior: MapViewOfSection 2 IoCs

pid	Process
856	578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe
1628	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1548	vssvc.exe
Token: SeRestorePrivilege	1548	vssvc.exe
Token: SeAuditPrivilege	1548	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 1628	856	578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe	28
PID 856 wrote to memory of 1628	856	578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe	28
PID 856 wrote to memory of 1628	856	578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe	28
PID 856 wrote to memory of 1628	856	578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe	28
PID 1628 wrote to memory of 1288	1628	explorer.exe	29
PID 1628 wrote to memory of 1288	1628	explorer.exe	29
PID 1628 wrote to memory of 1288	1628	explorer.exe	29
PID 1628 wrote to memory of 1288	1628	explorer.exe	29
PID 1628 wrote to memory of 1404	1628	explorer.exe	30
PID 1628 wrote to memory of 1404	1628	explorer.exe	30
PID 1628 wrote to memory of 1404	1628	explorer.exe	30
PID 1628 wrote to memory of 1404	1628	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe
"C:\Users\Admin\AppData\Local\Temp\578a1a05e725f1be57643d19b84d087d4c1cf743938c3209590ec82f8c1bf90f.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:856
- 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:1628
- - C:\Windows\syswow64\svchost.exe
    -k netsvcs
    3⤵
    PID:1288
- - C:\Windows\syswow64\vssadmin.exe
    vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1404

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact