46dc49be65d7165e2a6009854a4f27f0088230199e61e0555cb1bd266535874a

Analysis

max time kernel
149s
max time network
166s
platform
windows10_x64
resource
win10v200722
submitted
11-08-2020 12:30

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General

Target

foo/798f5e61531f527821a490a15ef957ba.exe

Score

10^/10

evasion persistence trojan upx

Malware Config

Signatures

Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
Executes dropped EXE 1 IoCs

Processes:

winsvcs.exe

pid process

428 winsvcs.exe

pid	process
428	winsvcs.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Windows\48495005048032\winsvcs.exe	upx
C:\Windows\48495005048032\winsvcs.exe	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

winsvcs.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	winsvcs.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winsvcs.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

798f5e61531f527821a490a15ef957ba.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Services = "C:\\Windows\\48495005048032\\winsvcs.exe"	798f5e61531f527821a490a15ef957ba.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2168186643-810464528-1121082739-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Services = "C:\\Windows\\48495005048032\\winsvcs.exe"	798f5e61531f527821a490a15ef957ba.exe

Drops file in Windows directory 3 IoCs

Processes:

798f5e61531f527821a490a15ef957ba.exe

description	ioc	process
File opened for modification	C:\Windows\48495005048032	798f5e61531f527821a490a15ef957ba.exe
File created	C:\Windows\48495005048032\winsvcs.exe	798f5e61531f527821a490a15ef957ba.exe
File opened for modification	C:\Windows\48495005048032\winsvcs.exe	798f5e61531f527821a490a15ef957ba.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

798f5e61531f527821a490a15ef957ba.exe

description	pid	process	target process
PID 2608 wrote to memory of 428	2608	798f5e61531f527821a490a15ef957ba.exe	winsvcs.exe
PID 2608 wrote to memory of 428	2608	798f5e61531f527821a490a15ef957ba.exe	winsvcs.exe
PID 2608 wrote to memory of 428	2608	798f5e61531f527821a490a15ef957ba.exe	winsvcs.exe

C:\Users\Admin\AppData\Local\Temp\foo\798f5e61531f527821a490a15ef957ba.exe
"C:\Users\Admin\AppData\Local\Temp\foo\798f5e61531f527821a490a15ef957ba.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\48495005048032\winsvcs.exe
  C:\Windows\48495005048032\winsvcs.exe
  2⤵
  - Executes dropped EXE
  - Windows security modification
  PID:428

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\48495005048032\winsvcs.exe

MD5
798f5e61531f527821a490a15ef957ba

SHA1
8b9cf50467ecccda66fe065e52994a0df369b139

SHA256
1b2d37bb6b98fb77496db754816296b740a2fe7a8e3d0a5263a8002d16a1b5f9

SHA512
9706113b056b96f4c5f89a3991a2adddbe1d7a6e44d03ce919edf88ead8e500eed4b84d5b2886ec4f733003bd751ba9653ad810bf7b8046aa94711f2552d628e

Download Submit
C:\Windows\48495005048032\winsvcs.exe

MD5
798f5e61531f527821a490a15ef957ba

SHA1
8b9cf50467ecccda66fe065e52994a0df369b139

SHA256
1b2d37bb6b98fb77496db754816296b740a2fe7a8e3d0a5263a8002d16a1b5f9

SHA512
9706113b056b96f4c5f89a3991a2adddbe1d7a6e44d03ce919edf88ead8e500eed4b84d5b2886ec4f733003bd751ba9653ad810bf7b8046aa94711f2552d628e

Download Submit
memory/428-2-0x0000000000000000-mapping.dmp

Download
memory/428-5-0x0000000002360000-0x0000000002361000-memory.dmp

Filesize
4KB

Download
memory/428-6-0x0000000000710000-0x0000000000713000-memory.dmp

Filesize
12KB

Download
memory/2608-0-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/2608-1-0x000000000054E000-0x000000000054F000-memory.dmp

Filesize
4KB

Download