7704beba73e1681d44a34f38afe3b14f50fa4e26dd4b63efee3b77849ee182c3

Analysis

max time kernel
151s
max time network
156s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/08/2022, 11:00

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General

Target
updated PI 8242220.pdf.exe
Size 778KB
Sample220829-m31ddsgbdq
SHA256 7704beba73e1681d44a34f38afe3b14f50fa4e26dd4b63efee3b77849ee182c3
MD5 5c2a56f51b48871a2ef630319d9ec0a7
SHA1 1d4724c64f2362221e6c7fb3461aa59166d1854b
SHA512 5cded88f100e308aaf47c19e31c98ceff3d80e623719894f623e55eed9f21056a392ece726a67f4c3cb3e8ccb639416e5e76c8f3a007a13a3bf18ee1818df896
SSDEEP 24576:TquT/0shbH13T/0shb2I3lLUdsba3MUOG+:OE5TjLisb8QG+
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	1724	cmstp.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2591564548-2301609547-1748242483-1000\Control Panel\International\Geo\Nation	updated PI 8242220.pdf.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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1776 set thread context of 1216	1776	updated PI 8242220.pdf.exe	15
PID 1724 set thread context of 1216	1724	cmstp.exe	15

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2591564548-2301609547-1748242483-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1776	updated PI 8242220.pdf.exe
1776	updated PI 8242220.pdf.exe
1776	updated PI 8242220.pdf.exe
1776	updated PI 8242220.pdf.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1776	updated PI 8242220.pdf.exe
1776	updated PI 8242220.pdf.exe
1776	updated PI 8242220.pdf.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	updated PI 8242220.pdf.exe
Token: SeDebugPrivilege	1724	cmstp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1216	Explorer.EXE
1216	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1216	Explorer.EXE
1216	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1712 wrote to memory of 1776	1712	updated PI 8242220.pdf.exe	27
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1216 wrote to memory of 1724	1216	Explorer.EXE	32
PID 1724 wrote to memory of 1836	1724	cmstp.exe	34
PID 1724 wrote to memory of 1836	1724	cmstp.exe	34
PID 1724 wrote to memory of 1836	1724	cmstp.exe	34
PID 1724 wrote to memory of 1836	1724	cmstp.exe	34
PID 1724 wrote to memory of 1836	1724	cmstp.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Users\Admin\AppData\Local\Temp\updated PI 8242220.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\updated PI 8242220.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Users\Admin\AppData\Local\Temp\updated PI 8242220.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\updated PI 8242220.pdf.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1776
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1236
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1064
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1876
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1904
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

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

memory/1216-70-0x0000000005060000-0x0000000005187000-memory.dmp

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memory/1216-79-0x0000000004B10000-0x0000000004BC2000-memory.dmp

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memory/1216-77-0x0000000004B10000-0x0000000004BC2000-memory.dmp

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memory/1712-55-0x0000000075D91000-0x0000000075D93000-memory.dmp

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memory/1712-56-0x00000000006D0000-0x00000000006EA000-memory.dmp

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memory/1712-57-0x0000000000610000-0x000000000061C000-memory.dmp

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memory/1712-58-0x0000000007C90000-0x0000000007D10000-memory.dmp

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memory/1712-59-0x00000000022A0000-0x00000000022D2000-memory.dmp

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memory/1712-54-0x0000000000990000-0x0000000000A58000-memory.dmp

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memory/1724-76-0x0000000000970000-0x00000000009FF000-memory.dmp

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memory/1724-78-0x0000000000090000-0x00000000000BB000-memory.dmp

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memory/1724-74-0x0000000000090000-0x00000000000BB000-memory.dmp

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memory/1724-75-0x0000000000AE0000-0x0000000000DE3000-memory.dmp

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memory/1724-73-0x0000000000EB0000-0x0000000000EC8000-memory.dmp

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memory/1776-63-0x0000000000400000-0x000000000042B000-memory.dmp

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memory/1776-69-0x0000000000100000-0x0000000000110000-memory.dmp

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memory/1776-68-0x000000000041F000-0x0000000000421000-memory.dmp

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memory/1776-66-0x0000000000400000-0x000000000042B000-memory.dmp

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memory/1776-61-0x0000000000400000-0x000000000042B000-memory.dmp

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memory/1776-67-0x0000000000BF0000-0x0000000000EF3000-memory.dmp

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memory/1776-60-0x0000000000400000-0x000000000042B000-memory.dmp

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