blustealer | 7b8c63fc9564c82db7c23fcf523fea4e7e69de4ef7dbc5c2b3bb06a7491b4f26

General

Target

SWIFT IMG_2022082__000021001.pdf.exe
Size

32KB
MD5

89b50d1a3235605ef9d41c853dc836a1
SHA1

e95e06a65f58ad79f18703b9d7e4c368b3cb4111
SHA256

7b8c63fc9564c82db7c23fcf523fea4e7e69de4ef7dbc5c2b3bb06a7491b4f26
SHA512

5c92abc9c10bd5508fbdbfc7556ade8f48126e974952c71f08c39fb572d9fc4508c2f72496e4b5f64ce6fc6e440d30f9fab65c91321fa0232d85071ba81244bc
SSDEEP

768:cYEFJv2nurSZxASYvuT+/mz3PcefI/A57:Q3unumASYvuumz3Pnf9d

Score

10^/10

blustealer stormkitty collection persistence stealer

Malware Config

Signatures

BluStealer
A Modular information stealer written in Visual Basic.
stealer blustealer
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/4420-154-0x0000000000550000-0x000000000056A000-memory.dmp	family_stormkitty

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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	SWIFT IMG_2022082__000021001.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vydnzblx = "\"C:\\Users\\Admin\\AppData\\Roaming\\Jrjixq\\Vydnzblx.exe\""	SWIFT IMG_2022082__000021001.pdf.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
37	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2192 set thread context of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 624 set thread context of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	AppLaunch.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	AppLaunch.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4224	powershell.exe
4224	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2192	SWIFT IMG_2022082__000021001.pdf.exe
Token: SeDebugPrivilege	4224	powershell.exe
Token: SeDebugPrivilege	4420	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
624	SWIFT IMG_2022082__000021001.pdf.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2192 wrote to memory of 4224	2192	SWIFT IMG_2022082__000021001.pdf.exe	82
PID 2192 wrote to memory of 4224	2192	SWIFT IMG_2022082__000021001.pdf.exe	82
PID 2192 wrote to memory of 4224	2192	SWIFT IMG_2022082__000021001.pdf.exe	82
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 2192 wrote to memory of 624	2192	SWIFT IMG_2022082__000021001.pdf.exe	90
PID 624 wrote to memory of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92
PID 624 wrote to memory of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92
PID 624 wrote to memory of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92
PID 624 wrote to memory of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92
PID 624 wrote to memory of 4420	624	SWIFT IMG_2022082__000021001.pdf.exe	92

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SWIFT IMG_2022082__000021001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\SWIFT IMG_2022082__000021001.pdf.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4224
- C:\Users\Admin\AppData\Local\Temp\SWIFT IMG_2022082__000021001.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\SWIFT IMG_2022082__000021001.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:624
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
    3⤵
    - Accesses Microsoft Outlook profiles
    - Checks processor information in registry
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4420

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/624-147-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/624-156-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/624-152-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/624-149-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2192-137-0x0000000005A70000-0x0000000005A92000-memory.dmp

Filesize
136KB

Download
memory/2192-132-0x00000000002D0000-0x00000000002DE000-memory.dmp

Filesize
56KB

Download
memory/2192-133-0x0000000005870000-0x00000000058C0000-memory.dmp

Filesize
320KB

Download
memory/2192-134-0x0000000005980000-0x0000000005A32000-memory.dmp

Filesize
712KB

Download
memory/2192-135-0x0000000005FF0000-0x0000000006594000-memory.dmp

Filesize
5.6MB

Download
memory/2192-136-0x0000000005AE0000-0x0000000005B72000-memory.dmp

Filesize
584KB

Download
memory/4224-142-0x00000000057B0000-0x0000000005816000-memory.dmp

Filesize
408KB

Download
memory/4224-144-0x0000000007420000-0x0000000007A9A000-memory.dmp

Filesize
6.5MB

Download
memory/4224-145-0x0000000006300000-0x000000000631A000-memory.dmp

Filesize
104KB

Download
memory/4224-143-0x0000000005DE0000-0x0000000005DFE000-memory.dmp

Filesize
120KB

Download
memory/4224-141-0x0000000005690000-0x00000000056F6000-memory.dmp

Filesize
408KB

Download
memory/4224-140-0x0000000004F10000-0x0000000005538000-memory.dmp

Filesize
6.2MB

Download
memory/4224-139-0x0000000004830000-0x0000000004866000-memory.dmp

Filesize
216KB

Download
memory/4420-154-0x0000000000550000-0x000000000056A000-memory.dmp

Filesize
104KB

Download
memory/4420-155-0x0000000005470000-0x000000000550C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads