blustealer | 2bf197104a6418c886f206755e3f599ae9b1f90cf9771be981c30f427ecb228c

General

Target

SecuriteInfo.com.Variant.Strictor.274578.28312.exe
Size

852KB
MD5

ef6168fed961bcce0b3c7a63e2ab4f1a
SHA1

6ecf10e6b9d9978f706f868aeebd7cf169edcf74
SHA256

2bf197104a6418c886f206755e3f599ae9b1f90cf9771be981c30f427ecb228c
SHA512

4ab03a35eb2ed2cbde86f73463ea9c15ed21a0d9d68b1bf1042d80797d71a001204256bcfbdb6ae0f1a16dddc2ce4a42c892e33e893eb70e2af28ccee1c69939

Score

10^/10

blustealer stormkitty collection 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/4984-163-0x0000000000C20000-0x0000000000C3A000-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-1-5-21-1502147629-2175634256-330282290-1000\Control Panel\International\Geo\Nation	SecuriteInfo.com.Variant.Strictor.274578.28312.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.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
9	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3500 set thread context of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 1632 set thread context of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83

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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
2276	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
380	powershell.exe
380	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	380	powershell.exe
Token: SeDebugPrivilege	4984	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3500 wrote to memory of 380	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	78
PID 3500 wrote to memory of 380	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	78
PID 3500 wrote to memory of 380	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	78
PID 3500 wrote to memory of 2276	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	80
PID 3500 wrote to memory of 2276	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	80
PID 3500 wrote to memory of 2276	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	80
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 3500 wrote to memory of 1632	3500	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	82
PID 1632 wrote to memory of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83
PID 1632 wrote to memory of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83
PID 1632 wrote to memory of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83
PID 1632 wrote to memory of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83
PID 1632 wrote to memory of 4984	1632	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	83

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1502147629-2175634256-330282290-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.274578.28312.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.274578.28312.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CZvwoAio.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:380
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CZvwoAio" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9C40.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2276
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.274578.28312.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Strictor.274578.28312.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1632
- - 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:4984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

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

C:\Users\Admin\AppData\Local\Temp\tmp9C40.tmp

Filesize
1KB

MD5
287b2e91648b175ae2df0e8f6f23c4c4

SHA1
82f341cade71f50f03a4177764b1f8728117e99c

SHA256
c758a74aa5974d96571453712cc28491d7c50a5b9b2763e64a01f894bfbcf3bd

SHA512
863b2516b33c91336a98787101ad7f8d24fe11ff826948667236e1bb32b593f5bfc5b55c51e347d196177ec4ff77639c0083dae05c8bd7ba7b9be6060be3f574

Download Submit
memory/380-159-0x00000000073F0000-0x0000000007A6A000-memory.dmp

Filesize
6.5MB

Download
memory/380-161-0x0000000006D90000-0x0000000006D9A000-memory.dmp

Filesize
40KB

Download
memory/380-151-0x00000000053F0000-0x0000000005456000-memory.dmp

Filesize
408KB

Download
memory/380-167-0x0000000007040000-0x0000000007048000-memory.dmp

Filesize
32KB

Download
memory/380-166-0x0000000007060000-0x000000000707A000-memory.dmp

Filesize
104KB

Download
memory/380-142-0x00000000020F0000-0x0000000002126000-memory.dmp

Filesize
216KB

Download
memory/380-165-0x0000000006F50000-0x0000000006F5E000-memory.dmp

Filesize
56KB

Download
memory/380-144-0x0000000004D50000-0x0000000005378000-memory.dmp

Filesize
6.2MB

Download
memory/380-164-0x0000000006FA0000-0x0000000007036000-memory.dmp

Filesize
600KB

Download
memory/380-160-0x0000000006B10000-0x0000000006B2A000-memory.dmp

Filesize
104KB

Download
memory/380-147-0x0000000004A40000-0x0000000004A62000-memory.dmp

Filesize
136KB

Download
memory/380-150-0x0000000005380000-0x00000000053E6000-memory.dmp

Filesize
408KB

Download
memory/380-158-0x0000000005FA0000-0x0000000005FBE000-memory.dmp

Filesize
120KB

Download
memory/380-157-0x0000000071610000-0x000000007165C000-memory.dmp

Filesize
304KB

Download
memory/380-156-0x0000000005FF0000-0x0000000006022000-memory.dmp

Filesize
200KB

Download
memory/380-155-0x0000000005A10000-0x0000000005A2E000-memory.dmp

Filesize
120KB

Download
memory/1632-168-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1632-149-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1632-154-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1632-146-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3500-137-0x0000000004E10000-0x0000000004EA2000-memory.dmp

Filesize
584KB

Download
memory/3500-136-0x0000000005480000-0x0000000005A24000-memory.dmp

Filesize
5.6MB

Download
memory/3500-138-0x0000000004EB0000-0x0000000004EBA000-memory.dmp

Filesize
40KB

Download
memory/3500-139-0x0000000009D40000-0x0000000009DDC000-memory.dmp

Filesize
624KB

Download
memory/3500-135-0x00000000003B0000-0x000000000048A000-memory.dmp

Filesize
872KB

Download
memory/4984-163-0x0000000000C20000-0x0000000000C3A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads