bcfefef116c5ccf1ea7e110be257222f01f73aff1e0106f2268313bed413afcb

Analysis

max time kernel
146s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230621-en
resource tags

arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
submitted
30-06-2023 12:21

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General

Target

loader.exe
Size

6.1MB
MD5

d07c83d3938c02bc7befdcf11a8f619e
SHA1

6cdcc379877847670c859417a84f3fc265a2b420
SHA256

bcfefef116c5ccf1ea7e110be257222f01f73aff1e0106f2268313bed413afcb
SHA512

1e211b65f23eaf32575f757c69df30b80f9f6ac1d4901371e65ae9d1471f5f873e6d4121189bc6b5bfe93149d4699dceab6b248a4e070ffbb703b0b97ff8581a
SSDEEP

98304:vrX2+qaBQF2Os1nxZyOZS4fBhENbOo1R+TfXw4ld9v4JCn6UE4+twOD4wfOtOdBq:vTZ3Ms1xI94fsNyQ61D4JFPtCtOdBuR

Score

9^/10

evasion persistence ransomware

Malware Config

Signatures

Clears Windows event logs 1 TTPs 1 IoCs

evasion ransomware

Indicator Removal on Host

T1070

pid	Process
4620	wevtutil.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\fbhiEsinzkveoaAskdgBAbohCk\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\fbhiEsinzkveoaAskdgBAbohCk"	loader.exe

Stops running service(s) 3 TTPs
evasion

Modify Existing Service
T1031

Impair Defenses
T1562

Service Stop
T1489

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{155688AF-A22E-409B-8D06-BF5045017573}.catalogItem	svchost.exe

Launches sc.exe 4 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4048	sc.exe
844	sc.exe
3076	sc.exe
4216	sc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2432	loader.exe
2432	loader.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2432	loader.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2432	loader.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeSecurityPrivilege	4620	wevtutil.exe
Token: SeBackupPrivilege	4620	wevtutil.exe
Token: SeLoadDriverPrivilege	2432	loader.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 4216	2432	loader.exe	85
PID 2432 wrote to memory of 4216	2432	loader.exe	85
PID 2432 wrote to memory of 4048	2432	loader.exe	87
PID 2432 wrote to memory of 4048	2432	loader.exe	87
PID 2432 wrote to memory of 3076	2432	loader.exe	92
PID 2432 wrote to memory of 3076	2432	loader.exe	92
PID 2432 wrote to memory of 844	2432	loader.exe	90
PID 2432 wrote to memory of 844	2432	loader.exe	90
PID 2432 wrote to memory of 4620	2432	loader.exe	93
PID 2432 wrote to memory of 4620	2432	loader.exe	93

C:\Users\Admin\AppData\Local\Temp\loader.exe
"C:\Users\Admin\AppData\Local\Temp\loader.exe"
1⤵
- Sets service image path in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SYSTEM32\sc.exe
  sc stop faceit > nul
  2⤵
  - Launches sc.exe
  PID:4216
- C:\Windows\SYSTEM32\sc.exe
  sc stop vgc > nul
  2⤵
  - Launches sc.exe
  PID:4048
- C:\Windows\SYSTEM32\sc.exe
  sc stop ESEADriver2 > nul
  2⤵
  - Launches sc.exe
  PID:844
- C:\Windows\SYSTEM32\sc.exe
  sc stop vgk > nul
  2⤵
  - Launches sc.exe
  PID:3076
- C:\Windows\SYSTEM32\wevtutil.exe
  wevtutil cl System
  2⤵
  - Clears Windows event logs
  - Suspicious use of AdjustPrivilegeToken
  PID:4620

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
PID:3632

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Indicator Removal on Host

T1070

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

memory/2432-133-0x00007FF8D7B90000-0x00007FF8D7B92000-memory.dmp

Filesize
8KB

Download
memory/2432-134-0x00007FF7EFCD0000-0x00007FF7F080F000-memory.dmp

Filesize
11.2MB

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