blustealer | 2bf197104a6418c886f206755e3f599ae9b1f90cf9771be981c30f427ecb228c

Analysis

max time kernel
144s
max time network
77s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
15-08-2022 09:34

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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 4 IoCs

resource	yara_rule
behavioral1/memory/1636-78-0x00000000000B0000-0x00000000000CA000-memory.dmp	family_stormkitty
behavioral1/memory/1636-79-0x00000000000C4F6E-mapping.dmp	family_stormkitty
behavioral1/memory/1636-81-0x00000000000B0000-0x00000000000CA000-memory.dmp	family_stormkitty
behavioral1/memory/1636-83-0x00000000000B0000-0x00000000000CA000-memory.dmp	family_stormkitty

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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
4	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1812 set thread context of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1440 set thread context of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34

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
1272	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe
1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe
1324	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe
Token: SeDebugPrivilege	1324	powershell.exe
Token: SeDebugPrivilege	1636	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1812 wrote to memory of 1324	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	28
PID 1812 wrote to memory of 1324	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	28
PID 1812 wrote to memory of 1324	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	28
PID 1812 wrote to memory of 1324	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	28
PID 1812 wrote to memory of 1272	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	30
PID 1812 wrote to memory of 1272	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	30
PID 1812 wrote to memory of 1272	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	30
PID 1812 wrote to memory of 1272	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	30
PID 1812 wrote to memory of 588	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	32
PID 1812 wrote to memory of 588	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	32
PID 1812 wrote to memory of 588	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	32
PID 1812 wrote to memory of 588	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	32
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1812 wrote to memory of 1440	1812	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	33
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34
PID 1440 wrote to memory of 1636	1440	SecuriteInfo.com.Variant.Strictor.274578.28312.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1812
- 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:1324
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CZvwoAio" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD49E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1272
- 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⤵
  PID:588
- 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:1440
- - 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:1636

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD49E.tmp

Filesize
1KB

MD5
397202479762926cbd23fd014c6b28bc

SHA1
f69655b77595b9f5485454e0ee9b874330a474d4

SHA256
aa19af419f253caec1e0da38f0ff67844bfa137f132e119f08f6b411da09e459

SHA512
ce06530b6627d0347be8f65beec2b95481fd612ee52058cecca697b65ab9234ce2e0d37be227a6bb04c335e44188e9625650115e8170c07ae934ce878c9155d5

Download Submit
memory/1324-85-0x000000006E860000-0x000000006EE0B000-memory.dmp

Filesize
5.7MB

Download
memory/1440-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-87-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-86-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-72-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-64-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-69-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1440-67-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1636-76-0x00000000000B0000-0x00000000000CA000-memory.dmp

Filesize
104KB

Download
memory/1636-78-0x00000000000B0000-0x00000000000CA000-memory.dmp

Filesize
104KB

Download
memory/1636-81-0x00000000000B0000-0x00000000000CA000-memory.dmp

Filesize
104KB

Download
memory/1636-83-0x00000000000B0000-0x00000000000CA000-memory.dmp

Filesize
104KB

Download
memory/1812-54-0x0000000000040000-0x000000000011A000-memory.dmp

Filesize
872KB

Download
memory/1812-58-0x0000000005340000-0x00000000053AE000-memory.dmp

Filesize
440KB

Download
memory/1812-63-0x0000000004CD0000-0x0000000004CFC000-memory.dmp

Filesize
176KB

Download
memory/1812-55-0x0000000076091000-0x0000000076093000-memory.dmp

Filesize
8KB

Download
memory/1812-56-0x0000000000680000-0x0000000000698000-memory.dmp

Filesize
96KB

Download
memory/1812-57-0x00000000004A0000-0x00000000004AC000-memory.dmp

Filesize
48KB

Download