Analysis
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max time kernel
152s -
max time network
15s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
24-08-2021 06:40
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE#0909000.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
INVOICE#0909000.exe
Resource
win10v20210410
General
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Target
INVOICE#0909000.exe
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Size
597KB
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MD5
2fa857766a51190a35c523d1e668c419
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SHA1
a03a3e40fea2601e2b745b6d111d8b50384f1bd5
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SHA256
32635c5f985aa62687009145f91b4523b781bea2faa94f7864d2ff16ab0a14ef
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SHA512
3c54fd2dcfce7e412b8fe2bf328b7feb22dc2eabc24b14040255b7844280c0b4e5d9860c3e244fd90e5702b51454a406039bfd4edd245ee0f530eac4ed191556
Malware Config
Signatures
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A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
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StormKitty
StormKitty is an open source info stealer written in C#.
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StormKitty Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/1736-69-0x0000000000400000-0x0000000000418000-memory.dmp family_stormkitty behavioral1/memory/1736-70-0x0000000000412452-mapping.dmp family_stormkitty -
A310logger Executable 5 IoCs
Processes:
resource yara_rule behavioral1/memory/1736-69-0x0000000000400000-0x0000000000418000-memory.dmp a310logger behavioral1/memory/1736-70-0x0000000000412452-mapping.dmp a310logger \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger -
Executes dropped EXE 1 IoCs
Processes:
MZ.exepid process 1940 MZ.exe -
Loads dropped DLL 1 IoCs
Processes:
InstallUtil.exepid process 1736 InstallUtil.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 5 icanhazip.com -
Looks up geolocation information via web service
Uses a legitimate geolocation service to find the infected system's geolocation info.
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Suspicious use of SetThreadContext 2 IoCs
Processes:
INVOICE#0909000.exeINVOICE#0909000.exedescription pid process target process PID 2004 set thread context of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 1800 set thread context of 1736 1800 INVOICE#0909000.exe InstallUtil.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
InstallUtil.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 InstallUtil.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
INVOICE#0909000.exeMZ.exepid process 2004 INVOICE#0909000.exe 1940 MZ.exe 1940 MZ.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
INVOICE#0909000.exepid process 1800 INVOICE#0909000.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
INVOICE#0909000.exeMZ.exedescription pid process Token: SeDebugPrivilege 2004 INVOICE#0909000.exe Token: SeDebugPrivilege 1940 MZ.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
INVOICE#0909000.exepid process 1800 INVOICE#0909000.exe 1800 INVOICE#0909000.exe -
Suspicious use of WriteProcessMemory 29 IoCs
Processes:
INVOICE#0909000.exeINVOICE#0909000.exeInstallUtil.exedescription pid process target process PID 2004 wrote to memory of 1884 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1884 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1884 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1884 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 2004 wrote to memory of 1800 2004 INVOICE#0909000.exe INVOICE#0909000.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1800 wrote to memory of 1736 1800 INVOICE#0909000.exe InstallUtil.exe PID 1736 wrote to memory of 1940 1736 InstallUtil.exe MZ.exe PID 1736 wrote to memory of 1940 1736 InstallUtil.exe MZ.exe PID 1736 wrote to memory of 1940 1736 InstallUtil.exe MZ.exe PID 1736 wrote to memory of 1940 1736 InstallUtil.exe MZ.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE#0909000.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\InstallUtil.exe"3⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exeMD5
1bad0cbd09b05a21157d8255dc801778
SHA1ff284bba12f011b72e20d4c9537d6c455cdbf228
SHA256218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9
SHA5124fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exeMD5
1bad0cbd09b05a21157d8255dc801778
SHA1ff284bba12f011b72e20d4c9537d6c455cdbf228
SHA256218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9
SHA5124fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533
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\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exeMD5
1bad0cbd09b05a21157d8255dc801778
SHA1ff284bba12f011b72e20d4c9537d6c455cdbf228
SHA256218073bda7a00e780704c1289d5e22ad27bb3ba11f210afa18af33a6ad5176e9
SHA5124fea56812eba1f1bba17f20d06b509e2a3b4e138562e53c230d0736d596abed4a6a3e43e26936fcd6d107924c8bba41885f34901afa4fd0d37d7e4a93c9b8533
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memory/1736-74-0x0000000001E30000-0x0000000001E31000-memory.dmpFilesize
4KB
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memory/1736-69-0x0000000000400000-0x0000000000418000-memory.dmpFilesize
96KB
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memory/1736-70-0x0000000000412452-mapping.dmp
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memory/1800-65-0x00000000004024E0-mapping.dmp
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memory/1800-64-0x0000000000400000-0x0000000000430000-memory.dmpFilesize
192KB
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memory/1800-68-0x00000000765F1000-0x00000000765F3000-memory.dmpFilesize
8KB
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memory/1800-72-0x0000000000400000-0x0000000000430000-memory.dmpFilesize
192KB
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memory/1940-76-0x0000000000000000-mapping.dmp
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memory/1940-79-0x0000000000B30000-0x0000000000B32000-memory.dmpFilesize
8KB
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memory/2004-71-0x0000000004930000-0x0000000004931000-memory.dmpFilesize
4KB
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memory/2004-60-0x00000000000E0000-0x00000000000E1000-memory.dmpFilesize
4KB
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memory/2004-63-0x00000000002D0000-0x00000000002DF000-memory.dmpFilesize
60KB
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memory/2004-62-0x00000000006F0000-0x0000000000761000-memory.dmpFilesize
452KB