blustealer | 87b4cdbfadddf0fb3f57f6d70aae952c2e44f1d426f56ace2ac3447d10303d92

General

Target

New Inquiry.exe
Size

32KB
MD5

4c80af75e8d9ff6e21153417e57d2874
SHA1

665df68d4bad5d33cc0591ceedd6af500e1baa77
SHA256

87b4cdbfadddf0fb3f57f6d70aae952c2e44f1d426f56ace2ac3447d10303d92
SHA512

606ab2a04fd8730e0b447d7500c1fc5f352b663e5c43eade03f42109dddee61fd9749535d421c9b79552ca7e2cf1addaff4f6ae76dc9f58860242694f712a1c7
SSDEEP

768:w2/ipdSl4AAqxDKwGguTLqTDO5XNVZZb9W+:woipLguTLqvO5Xn9W+

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/4464-154-0x0000000000C00000-0x0000000000C1A000-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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	New Inquiry.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\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
50	icanhazip.com

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1412 set thread context of 2976	1412	New Inquiry.exe	93
PID 2976 set thread context of 4464	2976	New Inquiry.exe	94

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

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1640	powershell.exe
1640	powershell.exe
1412	New Inquiry.exe
1412	New Inquiry.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2976	New Inquiry.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	New Inquiry.exe
Token: SeDebugPrivilege	1640	powershell.exe
Token: SeDebugPrivilege	4464	AppLaunch.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2976	New Inquiry.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 1640	1412	New Inquiry.exe	87
PID 1412 wrote to memory of 1640	1412	New Inquiry.exe	87
PID 1412 wrote to memory of 1640	1412	New Inquiry.exe	87
PID 1412 wrote to memory of 4768	1412	New Inquiry.exe	92
PID 1412 wrote to memory of 4768	1412	New Inquiry.exe	92
PID 1412 wrote to memory of 4768	1412	New Inquiry.exe	92
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 1412 wrote to memory of 2976	1412	New Inquiry.exe	93
PID 2976 wrote to memory of 4464	2976	New Inquiry.exe	94
PID 2976 wrote to memory of 4464	2976	New Inquiry.exe	94
PID 2976 wrote to memory of 4464	2976	New Inquiry.exe	94
PID 2976 wrote to memory of 4464	2976	New Inquiry.exe	94
PID 2976 wrote to memory of 4464	2976	New Inquiry.exe	94

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	AppLaunch.exe

C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
"C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1412
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1640
- C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
  "C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe"
  2⤵
  PID:4768
- C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe
  "C:\Users\Admin\AppData\Local\Temp\New Inquiry.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2976
- - 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:4464

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

memory/1412-132-0x00000000008D0000-0x00000000008DE000-memory.dmp

Filesize
56KB

Download
memory/1412-133-0x0000000005740000-0x0000000005CE4000-memory.dmp

Filesize
5.6MB

Download
memory/1412-134-0x00000000053C0000-0x0000000005452000-memory.dmp

Filesize
584KB

Download
memory/1412-135-0x0000000005390000-0x000000000539A000-memory.dmp

Filesize
40KB

Download
memory/1412-136-0x0000000006D50000-0x0000000006D72000-memory.dmp

Filesize
136KB

Download
memory/1640-142-0x00000000060E0000-0x00000000060FE000-memory.dmp

Filesize
120KB

Download
memory/1640-138-0x00000000027E0000-0x0000000002816000-memory.dmp

Filesize
216KB

Download
memory/1640-139-0x0000000005210000-0x0000000005838000-memory.dmp

Filesize
6.2MB

Download
memory/1640-140-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/1640-141-0x00000000058B0000-0x0000000005916000-memory.dmp

Filesize
408KB

Download
memory/1640-143-0x0000000007920000-0x0000000007F9A000-memory.dmp

Filesize
6.5MB

Download
memory/1640-144-0x00000000065C0000-0x00000000065DA000-memory.dmp

Filesize
104KB

Download
memory/2976-147-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2976-149-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2976-152-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2976-156-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/4464-154-0x0000000000C00000-0x0000000000C1A000-memory.dmp

Filesize
104KB

Download
memory/4464-155-0x00000000058F0000-0x000000000598C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads