c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357

General

Target

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
Size

201KB
MD5

3d3ad4451fe3dbbf4b65019c45350ebe
SHA1

b9ce92343985301e9fb9c9bbba3d7882d4d8c206
SHA256

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357
SHA512

c45a874c766ceb415106cc2d6a4f0325e62d1f5d34d4b6320a3d2ea4040c5a786fa6b83c674aa2242a7e119b8c114521009f7b8db40180f2b65baf2620780af1
SSDEEP

6144:K6RUQzD5g9q7hiQc6vxLX3vxq3w+XEUZAVIr9:KVQz1vNiQJ9X3v431EBVe

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\dfb5f6db.exe explorer.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dfb5f6db.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\dfb5f6d = "C:\\dfb5f6db\\dfb5f6db.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*fb5f6d = "C:\\dfb5f6db\\dfb5f6db.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\dfb5f6db = "C:\\Users\\Admin\\AppData\\Roaming\\dfb5f6db.exe"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*fb5f6db = "C:\\Users\\Admin\\AppData\\Roaming\\dfb5f6db.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 myexternalip.com
6 myexternalip.com
92 myexternalip.com
2 ip-addr.es

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe

description	pid	process	target process
PID 288 set thread context of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe

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

1736 vssadmin.exe
Suspicious behavior: MapViewOfSection 2 IoCs

Processes:

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exeexplorer.exe

pid process

1908 c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
2028 explorer.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1428 vssvc.exe
Token: SeRestorePrivilege 1428 vssvc.exe
Token: SeAuditPrivilege 1428 vssvc.exe

pid	process
1736	vssadmin.exe

pid	process
1908	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
2028	explorer.exe

description	pid	process
Token: SeBackupPrivilege	1428	vssvc.exe
Token: SeRestorePrivilege	1428	vssvc.exe
Token: SeAuditPrivilege	1428	vssvc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exec4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exeexplorer.exe

description	pid	process	target process
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 288 wrote to memory of 1908	288	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
PID 1908 wrote to memory of 2028	1908	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	explorer.exe
PID 1908 wrote to memory of 2028	1908	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	explorer.exe
PID 1908 wrote to memory of 2028	1908	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	explorer.exe
PID 1908 wrote to memory of 2028	1908	c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe	explorer.exe
PID 2028 wrote to memory of 1396	2028	explorer.exe	svchost.exe
PID 2028 wrote to memory of 1396	2028	explorer.exe	svchost.exe
PID 2028 wrote to memory of 1396	2028	explorer.exe	svchost.exe
PID 2028 wrote to memory of 1396	2028	explorer.exe	svchost.exe
PID 2028 wrote to memory of 1736	2028	explorer.exe	vssadmin.exe
PID 2028 wrote to memory of 1736	2028	explorer.exe	vssadmin.exe
PID 2028 wrote to memory of 1736	2028	explorer.exe	vssadmin.exe
PID 2028 wrote to memory of 1736	2028	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
"C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:288

C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe
"C:\Users\Admin\AppData\Local\Temp\c4db759ef1dc9d4d8ca8e776fa7d2e4bdc91e7d8d91a2466121c7b72c45e1357.exe"
2⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\syswow64\explorer.exe
"C:\Windows\syswow64\explorer.exe"
3⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\syswow64\svchost.exe
-k netsvcs
4⤵
PID:1396

C:\Windows\syswow64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:1736

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1428

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

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Downloads

memory/288-64-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/288-55-0x0000000074780000-0x0000000074D2B000-memory.dmp

Filesize
5.7MB

Download
memory/288-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

Filesize
8KB

Download
memory/1396-74-0x0000000000100000-0x0000000000125000-memory.dmp

Filesize
148KB

Download
memory/1396-73-0x0000000000100000-0x0000000000125000-memory.dmp

Filesize
148KB

Download
memory/1396-70-0x0000000000000000-mapping.dmp

Download
memory/1736-72-0x0000000000000000-mapping.dmp

Download
memory/1908-59-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1908-63-0x0000000000113AFE-mapping.dmp

Download
memory/1908-66-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1908-62-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1908-60-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1908-57-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1908-56-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2028-65-0x0000000000000000-mapping.dmp

Download
memory/2028-68-0x0000000074C71000-0x0000000074C73000-memory.dmp

Filesize
8KB

Download
memory/2028-69-0x0000000000080000-0x00000000000A5000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads