b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358

General

Target

b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe
Size

305KB
MD5

b19031e17bc0fbe1b2d2c0169afc3c98
SHA1

7d9f905adde04ee646eb54c2e791108ed707ebed
SHA256

b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358
SHA512

6d64402e6a7b589cbcd685973199fcb970c73a8b031a12260da22398bad20d813ae573c33ca6c19db87fe6346c48cbcb84b6062c52be0838185b439a6918aff4
SSDEEP

3072:v5Gqpg+TLvyAGu+drHkCsy4Ag0Fu1YbtHkJLe8OBtlAL/r+AgPqdALKMVR3k+Ak6:v11XCs7AO65KXdqKKR5Y7H5PPu

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\695f71cc.exe explorer.exe

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

Processes:

explorer.exe

description	ioc	process
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
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

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

4 ip-addr.es
6 myexternalip.com
8 myexternalip.com
86 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

1912 vssadmin.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exeexplorer.exe

pid process

1336 b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe
2040 explorer.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1732 vssvc.exe
Token: SeRestorePrivilege 1732 vssvc.exe
Token: SeAuditPrivilege 1732 vssvc.exe

flow	ioc
4	ip-addr.es
6	myexternalip.com
8	myexternalip.com
86	myexternalip.com

pid	process
1912	vssadmin.exe

pid	process
1336	b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe
2040	explorer.exe

description	pid	process
Token: SeBackupPrivilege	1732	vssvc.exe
Token: SeRestorePrivilege	1732	vssvc.exe
Token: SeAuditPrivilege	1732	vssvc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exeexplorer.exe

description	pid	process	target process
PID 1336 wrote to memory of 2040	1336	b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe	explorer.exe
PID 1336 wrote to memory of 2040	1336	b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe	explorer.exe
PID 1336 wrote to memory of 2040	1336	b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe	explorer.exe
PID 1336 wrote to memory of 2040	1336	b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe	explorer.exe
PID 2040 wrote to memory of 572	2040	explorer.exe	svchost.exe
PID 2040 wrote to memory of 572	2040	explorer.exe	svchost.exe
PID 2040 wrote to memory of 572	2040	explorer.exe	svchost.exe
PID 2040 wrote to memory of 572	2040	explorer.exe	svchost.exe
PID 2040 wrote to memory of 1912	2040	explorer.exe	vssadmin.exe
PID 2040 wrote to memory of 1912	2040	explorer.exe	vssadmin.exe
PID 2040 wrote to memory of 1912	2040	explorer.exe	vssadmin.exe
PID 2040 wrote to memory of 1912	2040	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe
"C:\Users\Admin\AppData\Local\Temp\b0c4858c1b34dcf6a851842bfda111338c195b0fe70342a62518320cada5a358.exe"
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1336

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:2040

C:\Windows\syswow64\svchost.exe
-k netsvcs
3⤵
PID:572

C:\Windows\syswow64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1912

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1732

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/572-61-0x0000000000000000-mapping.dmp

Download
memory/572-64-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/572-65-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download
memory/1336-54-0x0000000075F01000-0x0000000075F03000-memory.dmp

Filesize
8KB

Download
memory/1336-56-0x00000000007D0000-0x00000000007E6000-memory.dmp

Filesize
88KB

Download
memory/1336-57-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1912-62-0x0000000000000000-mapping.dmp

Download
memory/2040-55-0x0000000000000000-mapping.dmp

Download
memory/2040-59-0x0000000074E81000-0x0000000074E83000-memory.dmp

Filesize
8KB

Download
memory/2040-60-0x00000000000C0000-0x00000000000E5000-memory.dmp

Filesize
148KB

Download

Analysis

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