36c4b76918ad0cc2990097d29fe693eb3333709e20b33b97ab12d6ccbaf3e4bc

Analysis

max time kernel
139s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/01/2025, 02:13

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General

Target
PO1234.001.exe
Size 225KB
Sample250122-cnd7hasnhs
SHA256 36c4b76918ad0cc2990097d29fe693eb3333709e20b33b97ab12d6ccbaf3e4bc
MD5 435e17a63de9770c43659f6a6120ef5e
SHA1 1bdce2820788f662108d4b6a2555f6dceb715a3d
SHA512 942a13852c9ea16a8796d3fb0a3e27bc32ee1bd22ef67eaebbc054f0506425eae4a205b7b9640556d2b85310d17a70a00abee8cbaf5ae50b34d36ea6bea1e537
SSDEEP 3072:1YN8BR40zp8S8QkEaluUXK5Aa/37UmZwZUcHsXF/CAJJcXIh1S0TphLmVVtRl:3u0zGSiEapamG3ZwZUKsXdA47SML
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

collection discovery spyware stealer

Malware Config

Signatures

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	checkip.dyndns.org
8	reallyfreegeoip.org
9	reallyfreegeoip.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2600 set thread context of 2704	2600	PO1234.001.exe	30

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO1234.001.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2704	RegAsm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2704	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2704	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30
PID 2600 wrote to memory of 2704	2600	PO1234.001.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\PO1234.001.exe
"C:\Users\Admin\AppData\Local\Temp\PO1234.001.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:2704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/2600-0-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

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memory/2600-1-0x0000000000CF0000-0x0000000000D2E000-memory.dmp

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memory/2600-2-0x00000000006C0000-0x00000000006F6000-memory.dmp

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memory/2600-3-0x0000000000360000-0x0000000000372000-memory.dmp

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memory/2600-4-0x0000000073F10000-0x00000000745FE000-memory.dmp

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memory/2600-16-0x0000000073F10000-0x00000000745FE000-memory.dmp

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memory/2704-5-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-11-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-13-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-15-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2704-8-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-6-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/2704-7-0x0000000000400000-0x000000000041E000-memory.dmp

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