blustealer | 3082e3092bb33be6fe12afd5df501b83b82c0f6046e4ef0f60bfb2cd3291c002

General

Target

doc 20220726 009910 984993.pdf.exe
Size

900KB
MD5

e5bccfe4fba287ecb2d35ae166de15c8
SHA1

c308ec8b89f71d5816810ae55780152c255a1914
SHA256

3082e3092bb33be6fe12afd5df501b83b82c0f6046e4ef0f60bfb2cd3291c002
SHA512

07bd84ca40611f94b4c32f610a28e18c3c52639b67865bdfee98699afb2b14305da5b2e3d7115481b313a1de91f683fe2cb4997d7f2d6c9e7ac4e978baf8631a

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/5100-153-0x0000000000760000-0x000000000077A000-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-1-5-21-2372564722-193526734-2636556182-1000\Control Panel\International\Geo\Nation	doc 20220726 009910 984993.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\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
98	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 372 set thread context of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 4536 set thread context of 5100	4536	doc 20220726 009910 984993.pdf.exe	102

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
3560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
3152	powershell.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
372	doc 20220726 009910 984993.pdf.exe
3152	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	doc 20220726 009910 984993.pdf.exe
Token: SeDebugPrivilege	3152	powershell.exe
Token: SeDebugPrivilege	5100	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4536	doc 20220726 009910 984993.pdf.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 3152	372	doc 20220726 009910 984993.pdf.exe	95
PID 372 wrote to memory of 3152	372	doc 20220726 009910 984993.pdf.exe	95
PID 372 wrote to memory of 3152	372	doc 20220726 009910 984993.pdf.exe	95
PID 372 wrote to memory of 3560	372	doc 20220726 009910 984993.pdf.exe	97
PID 372 wrote to memory of 3560	372	doc 20220726 009910 984993.pdf.exe	97
PID 372 wrote to memory of 3560	372	doc 20220726 009910 984993.pdf.exe	97
PID 372 wrote to memory of 2712	372	doc 20220726 009910 984993.pdf.exe	99
PID 372 wrote to memory of 2712	372	doc 20220726 009910 984993.pdf.exe	99
PID 372 wrote to memory of 2712	372	doc 20220726 009910 984993.pdf.exe	99
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 372 wrote to memory of 4536	372	doc 20220726 009910 984993.pdf.exe	100
PID 4536 wrote to memory of 5100	4536	doc 20220726 009910 984993.pdf.exe	102
PID 4536 wrote to memory of 5100	4536	doc 20220726 009910 984993.pdf.exe	102
PID 4536 wrote to memory of 5100	4536	doc 20220726 009910 984993.pdf.exe	102
PID 4536 wrote to memory of 5100	4536	doc 20220726 009910 984993.pdf.exe	102
PID 4536 wrote to memory of 5100	4536	doc 20220726 009910 984993.pdf.exe	102

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2372564722-193526734-2636556182-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:372
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fsVEzsXg.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3152
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fsVEzsXg" /XML "C:\Users\Admin\AppData\Local\Temp\tmpECBC.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3560
- C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe"
  2⤵
  PID:2712
- C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\doc 20220726 009910 984993.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4536
- - 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:5100

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\tmpECBC.tmp

Filesize
1KB

MD5
4083c365b4a23e9712d9fb589311c65f

SHA1
3fb128191326a593fec7028cc9c8c61463cfb63c

SHA256
196797d1bfde7b2376e820ad0e32b28618e45572c49cb7f75c3b37a3dcd9e1fa

SHA512
ec06f7e99fff68f09f97552090151336fd947a7ad8ac7e2cac157feaae10565da9a3a095b8fac787af7996915def332ccda2b59002eee91009c446397fdc54d6

Download Submit
memory/372-131-0x0000000005B40000-0x00000000060E4000-memory.dmp

Filesize
5.6MB

Download
memory/372-132-0x0000000005630000-0x00000000056C2000-memory.dmp

Filesize
584KB

Download
memory/372-133-0x0000000005610000-0x000000000561A000-memory.dmp

Filesize
40KB

Download
memory/372-134-0x0000000007BE0000-0x0000000007C7C000-memory.dmp

Filesize
624KB

Download
memory/372-135-0x000000000BB40000-0x000000000BBA6000-memory.dmp

Filesize
408KB

Download
memory/372-130-0x0000000000CC0000-0x0000000000DA6000-memory.dmp

Filesize
920KB

Download
memory/3152-157-0x0000000007640000-0x0000000007CBA000-memory.dmp

Filesize
6.5MB

Download
memory/3152-161-0x0000000007350000-0x000000000735E000-memory.dmp

Filesize
56KB

Download
memory/3152-140-0x0000000004E10000-0x0000000005438000-memory.dmp

Filesize
6.2MB

Download
memory/3152-142-0x0000000004DA0000-0x0000000004DC2000-memory.dmp

Filesize
136KB

Download
memory/3152-163-0x00000000073A0000-0x00000000073A8000-memory.dmp

Filesize
32KB

Download
memory/3152-138-0x00000000023C0000-0x00000000023F6000-memory.dmp

Filesize
216KB

Download
memory/3152-146-0x0000000005570000-0x00000000055D6000-memory.dmp

Filesize
408KB

Download
memory/3152-162-0x00000000073C0000-0x00000000073DA000-memory.dmp

Filesize
104KB

Download
memory/3152-158-0x0000000006FF0000-0x000000000700A000-memory.dmp

Filesize
104KB

Download
memory/3152-151-0x0000000005D60000-0x0000000005D7E000-memory.dmp

Filesize
120KB

Download
memory/3152-160-0x0000000007270000-0x0000000007306000-memory.dmp

Filesize
600KB

Download
memory/3152-159-0x0000000007060000-0x000000000706A000-memory.dmp

Filesize
40KB

Download
memory/3152-154-0x0000000006E70000-0x0000000006EA2000-memory.dmp

Filesize
200KB

Download
memory/3152-155-0x0000000072900000-0x000000007294C000-memory.dmp

Filesize
304KB

Download
memory/3152-156-0x0000000006E50000-0x0000000006E6E000-memory.dmp

Filesize
120KB

Download
memory/4536-144-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4536-150-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4536-147-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/4536-164-0x0000000000400000-0x0000000000427000-memory.dmp

Filesize
156KB

Download
memory/5100-153-0x0000000000760000-0x000000000077A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads