8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90

Analysis

max time kernel
149s
max time network
89s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02-12-2022 22:54

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General

Target

8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
Size

172KB
MD5

e192ba029e3e51fbb4968be451dd02c3
SHA1

501dd63e9584629c0fa3fe965ee8006fe4bc12c9
SHA256

8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90
SHA512

e21f5d9ef0e87a9d1269ec833c4e72a0d6f78ea96479eda67532c77e62f5f1cdba1a2bb83ac74576ecb916afb7c7deb57624574dfa77f9051b3a6422df62e2fb
SSDEEP

3072:QH69DiMTdgP6RvRP5VwYznpDB/vWwvbSlJHy/r/zMJmd7DX4Xj:th3CSR1Q6L/vNvySj/zCgDXw

Score

8^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1944	svchst.exe
1876	svchst.exe

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1456-57-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-59-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-60-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-62-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-64-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-65-0x0000000000400000-0x0000000000439000-memory.dmp	upx
behavioral1/memory/1456-66-0x0000000000400000-0x0000000000439000-memory.dmp	upx

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchst.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Enumerates connected drives 3 TTPs 44 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\v:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\r:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\j:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\o:	svchst.exe
File opened (read-only)	\??\l:	svchst.exe
File opened (read-only)	\??\w:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\o:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\y:	svchst.exe
File opened (read-only)	\??\s:	svchst.exe
File opened (read-only)	\??\j:	svchst.exe
File opened (read-only)	\??\x:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\i:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\x:	svchst.exe
File opened (read-only)	\??\r:	svchst.exe
File opened (read-only)	\??\q:	svchst.exe
File opened (read-only)	\??\n:	svchst.exe
File opened (read-only)	\??\h:	svchst.exe
File opened (read-only)	\??\y:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\q:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\h:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\w:	svchst.exe
File opened (read-only)	\??\u:	svchst.exe
File opened (read-only)	\??\t:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\n:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\f:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\v:	svchst.exe
File opened (read-only)	\??\p:	svchst.exe
File opened (read-only)	\??\g:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\e:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\z:	svchst.exe
File opened (read-only)	\??\z:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\s:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\p:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\m:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\k:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\t:	svchst.exe
File opened (read-only)	\??\m:	svchst.exe
File opened (read-only)	\??\k:	svchst.exe
File opened (read-only)	\??\i:	svchst.exe
File opened (read-only)	\??\g:	svchst.exe
File opened (read-only)	\??\f:	svchst.exe
File opened (read-only)	\??\e:	svchst.exe
File opened (read-only)	\??\u:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened (read-only)	\??\l:	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	svchst.exe
File created	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\sLT.exf	svchst.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 956 set thread context of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 1944 set thread context of 1876	1944	svchst.exe	30

Drops file in Windows directory 4 IoCs

description	ioc	Process
File created	C:\Windows\mssys.dll	svchst.exe
File created	C:\Windows\mssys.dll	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File created	C:\Windows\svchst.exe	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
File opened for modification	C:\Windows\svchst.exe	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe

Modifies data under HKEY_USERS 6 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	svchst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	svchst.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	svchst.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	svchst.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	svchst.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	svchst.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
1944	svchst.exe
1944	svchst.exe
1944	svchst.exe
1944	svchst.exe
1944	svchst.exe
1944	svchst.exe
1944	svchst.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 956 wrote to memory of 1456	956	8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe	28
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30
PID 1944 wrote to memory of 1876	1944	svchst.exe	30

C:\Users\Admin\AppData\Local\Temp\8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
"C:\Users\Admin\AppData\Local\Temp\8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe"
1⤵
- Checks BIOS information in registry
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:956
- C:\Users\Admin\AppData\Local\Temp\8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe
  "C:\Users\Admin\AppData\Local\Temp\8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90.exe"
  2⤵
  - Drops file in Windows directory
  PID:1456

C:\Windows\svchst.exe
C:\Windows\svchst.exe
1⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Enumerates connected drives
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1944
- C:\Windows\svchst.exe
  C:\Windows\svchst.exe
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:1876

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\svchst.exe

Filesize
172KB

MD5
e192ba029e3e51fbb4968be451dd02c3

SHA1
501dd63e9584629c0fa3fe965ee8006fe4bc12c9

SHA256
8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90

SHA512
e21f5d9ef0e87a9d1269ec833c4e72a0d6f78ea96479eda67532c77e62f5f1cdba1a2bb83ac74576ecb916afb7c7deb57624574dfa77f9051b3a6422df62e2fb

Download Submit
C:\Windows\svchst.exe

Filesize
172KB

MD5
e192ba029e3e51fbb4968be451dd02c3

SHA1
501dd63e9584629c0fa3fe965ee8006fe4bc12c9

SHA256
8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90

SHA512
e21f5d9ef0e87a9d1269ec833c4e72a0d6f78ea96479eda67532c77e62f5f1cdba1a2bb83ac74576ecb916afb7c7deb57624574dfa77f9051b3a6422df62e2fb

Download Submit
C:\Windows\svchst.exe

Filesize
172KB

MD5
e192ba029e3e51fbb4968be451dd02c3

SHA1
501dd63e9584629c0fa3fe965ee8006fe4bc12c9

SHA256
8448cb641cecddcebb71006ca0368e94b587261cb314f7498fbc916625954b90

SHA512
e21f5d9ef0e87a9d1269ec833c4e72a0d6f78ea96479eda67532c77e62f5f1cdba1a2bb83ac74576ecb916afb7c7deb57624574dfa77f9051b3a6422df62e2fb

Download Submit
memory/956-67-0x00000000001B0000-0x00000000001DD000-memory.dmp

Filesize
180KB

Download
memory/956-55-0x0000000075631000-0x0000000075633000-memory.dmp

Filesize
8KB

Download
memory/956-88-0x0000000000A00000-0x0000000000A2D000-memory.dmp

Filesize
180KB

Download
memory/956-54-0x0000000000A00000-0x0000000000A2D000-memory.dmp

Filesize
180KB

Download
memory/1456-68-0x0000000000A00000-0x0000000000A2D000-memory.dmp

Filesize
180KB

Download
memory/1456-87-0x0000000000426000-0x0000000000438000-memory.dmp

Filesize
72KB

Download
memory/1456-65-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-66-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-62-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-69-0x0000000000426000-0x0000000000438000-memory.dmp

Filesize
72KB

Download
memory/1456-60-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-59-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-56-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-57-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1456-64-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/1876-84-0x0000000000E70000-0x0000000000E9D000-memory.dmp

Filesize
180KB

Download
memory/1876-89-0x0000000000426000-0x0000000000438000-memory.dmp

Filesize
72KB

Download
memory/1876-90-0x0000000000426000-0x0000000000438000-memory.dmp

Filesize
72KB

Download
memory/1944-81-0x0000000000E70000-0x0000000000E9D000-memory.dmp

Filesize
180KB

Download