blustealer | 4a4ce6ec040bc9218e968e392a46a9e19380bf8be1bc7f989715e2d53770c77f

General

Target

20220906 - 00020000001001.pdf.exe
Size

871KB
MD5

48ed3a5b89df4c83f43c231d190c4726
SHA1

7acba69249c5081577c60d5e05c5b96ffc3bf1de
SHA256

4a4ce6ec040bc9218e968e392a46a9e19380bf8be1bc7f989715e2d53770c77f
SHA512

d1a89fa9fdbe13912a45a69084bd14a3ad593106b061e55c872d7985407e118da33741db81de4565b99d613db139bf3cd32c33ed015a73bf82582ed0d8cddc38
SSDEEP

6144:1Rlbcr0FdRmvct7YOjTZGN6O46h5iIWROT+e1L1ludK0INglez2YNnIkta8mhiKS:d3pz05iveBludK0EhNIkQ900pw3bK

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/4808-159-0x00000000007B0000-0x00000000007CA000-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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	20220906 - 00020000001001.pdf.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\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
28	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1092 set thread context of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1124 set thread context of 4808	1124	20220906 - 00020000001001.pdf.exe	91

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
3392	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1092	20220906 - 00020000001001.pdf.exe
1092	20220906 - 00020000001001.pdf.exe
1092	20220906 - 00020000001001.pdf.exe
1092	20220906 - 00020000001001.pdf.exe
1092	20220906 - 00020000001001.pdf.exe
1092	20220906 - 00020000001001.pdf.exe
3180	powershell.exe
1092	20220906 - 00020000001001.pdf.exe
3180	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1124	20220906 - 00020000001001.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1092	20220906 - 00020000001001.pdf.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeDebugPrivilege	4808	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1124	20220906 - 00020000001001.pdf.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 3180	1092	20220906 - 00020000001001.pdf.exe	86
PID 1092 wrote to memory of 3180	1092	20220906 - 00020000001001.pdf.exe	86
PID 1092 wrote to memory of 3180	1092	20220906 - 00020000001001.pdf.exe	86
PID 1092 wrote to memory of 3392	1092	20220906 - 00020000001001.pdf.exe	88
PID 1092 wrote to memory of 3392	1092	20220906 - 00020000001001.pdf.exe	88
PID 1092 wrote to memory of 3392	1092	20220906 - 00020000001001.pdf.exe	88
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1092 wrote to memory of 1124	1092	20220906 - 00020000001001.pdf.exe	90
PID 1124 wrote to memory of 4808	1124	20220906 - 00020000001001.pdf.exe	91
PID 1124 wrote to memory of 4808	1124	20220906 - 00020000001001.pdf.exe	91
PID 1124 wrote to memory of 4808	1124	20220906 - 00020000001001.pdf.exe	91
PID 1124 wrote to memory of 4808	1124	20220906 - 00020000001001.pdf.exe	91
PID 1124 wrote to memory of 4808	1124	20220906 - 00020000001001.pdf.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\fDmOIVxv.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3180
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fDmOIVxv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp98A6.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3392
- C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\20220906 - 00020000001001.pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1124
- - 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:4808

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\tmp98A6.tmp

Filesize
1KB

MD5
df35d28dcffb1f0b5f38941b3bec743a

SHA1
5844342c70de23be76484d649b0e283bf0ac78ab

SHA256
06a3a48cd62e773442c1ff71f74ac0009878c6d35b0b31ca095be67e288bfc4f

SHA512
ccb23af1d162bacece253d2bc763c11889c95b79a067434953ceef6379982c33fe77330a56dbcca102c114c546af39170a8f8ee40a316b13ec9c9686967da690

Download Submit
memory/1092-133-0x0000000005BB0000-0x0000000006154000-memory.dmp

Filesize
5.6MB

Download
memory/1092-134-0x00000000056A0000-0x0000000005732000-memory.dmp

Filesize
584KB

Download
memory/1092-135-0x0000000005640000-0x000000000564A000-memory.dmp

Filesize
40KB

Download
memory/1092-136-0x00000000090E0000-0x000000000917C000-memory.dmp

Filesize
624KB

Download
memory/1092-137-0x0000000001560000-0x00000000015C6000-memory.dmp

Filesize
408KB

Download
memory/1092-132-0x0000000000BC0000-0x0000000000CA0000-memory.dmp

Filesize
896KB

Download
memory/1124-165-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1124-152-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1124-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1124-145-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3180-156-0x0000000007E30000-0x00000000084AA000-memory.dmp

Filesize
6.5MB

Download
memory/3180-160-0x0000000007850000-0x000000000785A000-memory.dmp

Filesize
40KB

Download
memory/3180-148-0x0000000005E30000-0x0000000005E96000-memory.dmp

Filesize
408KB

Download
memory/3180-142-0x0000000005760000-0x0000000005D88000-memory.dmp

Filesize
6.2MB

Download
memory/3180-151-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/3180-140-0x0000000002BB0000-0x0000000002BE6000-memory.dmp

Filesize
216KB

Download
memory/3180-153-0x00000000074A0000-0x00000000074D2000-memory.dmp

Filesize
200KB

Download
memory/3180-154-0x0000000070EC0000-0x0000000070F0C000-memory.dmp

Filesize
304KB

Download
memory/3180-155-0x0000000006AB0000-0x0000000006ACE000-memory.dmp

Filesize
120KB

Download
memory/3180-157-0x00000000077E0000-0x00000000077FA000-memory.dmp

Filesize
104KB

Download
memory/3180-164-0x0000000007B00000-0x0000000007B08000-memory.dmp

Filesize
32KB

Download
memory/3180-163-0x0000000007B20000-0x0000000007B3A000-memory.dmp

Filesize
104KB

Download
memory/3180-144-0x0000000005510000-0x0000000005532000-memory.dmp

Filesize
136KB

Download
memory/3180-161-0x0000000007A60000-0x0000000007AF6000-memory.dmp

Filesize
600KB

Download
memory/3180-162-0x0000000007A10000-0x0000000007A1E000-memory.dmp

Filesize
56KB

Download
memory/4808-159-0x00000000007B0000-0x00000000007CA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads