blustealer | 77c6e1965847d0c468be046c2360733a408b0b7641eca5514b5810e2f132eec6

General

Target

Invoice no. 004.exe
Size

626KB
MD5

5500eeff820e3f9518f14ac32df4e735
SHA1

25af6b1565154eac95865b9db7944b9bbc842493
SHA256

45035676e4441c255385a1436d86540859459f5b1f3105e7a21bc9c07057276c
SHA512

79579fbacb4d138e39b73ccdc0a0dcc5683c7abe55691ca8f35e8c55001fd9d801122b5b9b8a5e5e64fef1e4a6508fd1bf84547bb09cc37a1c9fa6787bb2edef
SSDEEP

12288:zTMyRj2hhIFdlf3VqRc4l75hFILoX8dDSYEXFBNCxUmeGptLWlqYCYvx8S:zTMqKkFdN3+cs77FD2Do3jmFpwlgYvx

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/368-153-0x0000000000700000-0x000000000071A000-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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Invoice no. 004.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\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
79	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1684 set thread context of 1056	1684	Invoice no. 004.exe	100
PID 1056 set thread context of 368	1056	Invoice no. 004.exe	101

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
2592	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
1684	Invoice no. 004.exe
4832	powershell.exe
4832	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1684	Invoice no. 004.exe
Token: SeDebugPrivilege	4832	powershell.exe
Token: SeDebugPrivilege	368	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1056	Invoice no. 004.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 4832	1684	Invoice no. 004.exe	96
PID 1684 wrote to memory of 4832	1684	Invoice no. 004.exe	96
PID 1684 wrote to memory of 4832	1684	Invoice no. 004.exe	96
PID 1684 wrote to memory of 2592	1684	Invoice no. 004.exe	98
PID 1684 wrote to memory of 2592	1684	Invoice no. 004.exe	98
PID 1684 wrote to memory of 2592	1684	Invoice no. 004.exe	98
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1684 wrote to memory of 1056	1684	Invoice no. 004.exe	100
PID 1056 wrote to memory of 368	1056	Invoice no. 004.exe	101
PID 1056 wrote to memory of 368	1056	Invoice no. 004.exe	101
PID 1056 wrote to memory of 368	1056	Invoice no. 004.exe	101
PID 1056 wrote to memory of 368	1056	Invoice no. 004.exe	101
PID 1056 wrote to memory of 368	1056	Invoice no. 004.exe	101

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\hpUATicOQr.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4832
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hpUATicOQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC67C.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2592
- C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice no. 004.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1056
- - 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:368

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\tmpC67C.tmp

Filesize
1KB

MD5
5dbfb86c1ca65a022e2a7b8ba2fb6984

SHA1
6c32fccd701fd0d72a225ce6d1078c80e1ff684d

SHA256
4278cc82e9dbbe68075a72072c4d84719b80481371b79fe546c4d78d0e5def62

SHA512
4ac13924f4fba79c0bdde2488d499eb2a1741a208330ceacdefac5558cb68ebad7e1b4a76233fd0b494d11084981abdc539fbd48819051dc3202a21e349361a8

Download Submit
memory/368-153-0x0000000000700000-0x000000000071A000-memory.dmp

Filesize
104KB

Download
memory/1056-165-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1056-150-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1056-144-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1056-146-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1684-136-0x0000000008910000-0x00000000089AC000-memory.dmp

Filesize
624KB

Download
memory/1684-137-0x000000000B130000-0x000000000B196000-memory.dmp

Filesize
408KB

Download
memory/1684-132-0x0000000000560000-0x0000000000604000-memory.dmp

Filesize
656KB

Download
memory/1684-135-0x0000000005180000-0x000000000518A000-memory.dmp

Filesize
40KB

Download
memory/1684-134-0x0000000004FC0000-0x0000000005052000-memory.dmp

Filesize
584KB

Download
memory/1684-133-0x00000000054D0000-0x0000000005A74000-memory.dmp

Filesize
5.6MB

Download
memory/4832-158-0x00000000082A0000-0x000000000891A000-memory.dmp

Filesize
6.5MB

Download
memory/4832-156-0x0000000070E80000-0x0000000070ECC000-memory.dmp

Filesize
304KB

Download
memory/4832-143-0x0000000005B70000-0x0000000006198000-memory.dmp

Filesize
6.2MB

Download
memory/4832-140-0x0000000003040000-0x0000000003076000-memory.dmp

Filesize
216KB

Download
memory/4832-149-0x0000000005880000-0x00000000058A2000-memory.dmp

Filesize
136KB

Download
memory/4832-155-0x0000000007B00000-0x0000000007B32000-memory.dmp

Filesize
200KB

Download
memory/4832-151-0x00000000062A0000-0x0000000006306000-memory.dmp

Filesize
408KB

Download
memory/4832-157-0x0000000006F00000-0x0000000006F1E000-memory.dmp

Filesize
120KB

Download
memory/4832-154-0x0000000006940000-0x000000000695E000-memory.dmp

Filesize
120KB

Download
memory/4832-159-0x0000000007C50000-0x0000000007C6A000-memory.dmp

Filesize
104KB

Download
memory/4832-160-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

Filesize
40KB

Download
memory/4832-161-0x0000000007ED0000-0x0000000007F66000-memory.dmp

Filesize
600KB

Download
memory/4832-162-0x0000000007E90000-0x0000000007E9E000-memory.dmp

Filesize
56KB

Download
memory/4832-163-0x0000000007FA0000-0x0000000007FBA000-memory.dmp

Filesize
104KB

Download
memory/4832-164-0x0000000007F80000-0x0000000007F88000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads