Analysis
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max time kernel
151s -
max time network
137s -
platform
windows10_x64 -
resource
win10-en -
submitted
06-09-2021 06:49
Static task
static1
Behavioral task
behavioral1
Sample
NKPOY00987900K.exe
Resource
win7-en
Behavioral task
behavioral2
Sample
NKPOY00987900K.exe
Resource
win10-en
General
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Target
NKPOY00987900K.exe
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Size
37KB
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MD5
519495b97861c5e3aa560ccbf16b6a00
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SHA1
d25dfc588f3462eb4bfb4360bf2822c5c8645ec5
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SHA256
990b62bd8929c8b736fdcf793edb869c350b1a47a7d14ae07f12f951b4d9d55d
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SHA512
7720caf3c3aed61ef4fc00c3f281f56b5fc547abee6a7c0014e77b465b6684ea657bba3de7a289ae4e7f5a3186bcceb589d19ea906471668d59cffdde6c8e03c
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 4 IoCs
Processes:
resource yara_rule behavioral2/memory/3368-118-0x0000000000400000-0x0000000000418000-memory.dmp family_stormkitty behavioral2/memory/3368-119-0x0000000000412452-mapping.dmp family_stormkitty behavioral2/memory/3504-128-0x0000000000412452-mapping.dmp family_stormkitty behavioral2/memory/1272-137-0x0000000000412452-mapping.dmp family_stormkitty -
A310logger Executable 10 IoCs
Processes:
resource yara_rule behavioral2/memory/3368-118-0x0000000000400000-0x0000000000418000-memory.dmp a310logger behavioral2/memory/3368-119-0x0000000000412452-mapping.dmp a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger behavioral2/memory/3504-128-0x0000000000412452-mapping.dmp a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\MZ.exe a310logger behavioral2/memory/1272-137-0x0000000000412452-mapping.dmp 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 3 IoCs
Processes:
MZ.exeMZ.exeMZ.exepid process 3820 MZ.exe 2024 MZ.exe 812 MZ.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 19 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 4 IoCs
Processes:
NKPOY00987900K.exeNKPOY00987900K.exedescription pid process target process PID 2280 set thread context of 2820 2280 NKPOY00987900K.exe NKPOY00987900K.exe PID 2820 set thread context of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 set thread context of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 set thread context of 1272 2820 NKPOY00987900K.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 6 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
InstallUtil.exeInstallUtil.exeInstallUtil.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier InstallUtil.exe Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 InstallUtil.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier InstallUtil.exe Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 InstallUtil.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier InstallUtil.exe Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 InstallUtil.exe -
Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
MZ.exeMZ.exeMZ.exepid process 3820 MZ.exe 3820 MZ.exe 2024 MZ.exe 2024 MZ.exe 812 MZ.exe 812 MZ.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
NKPOY00987900K.exepid process 2820 NKPOY00987900K.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
NKPOY00987900K.exepid process 2280 NKPOY00987900K.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
InstallUtil.exeMZ.exeInstallUtil.exeMZ.exeInstallUtil.exeMZ.exedescription pid process Token: SeDebugPrivilege 3368 InstallUtil.exe Token: SeDebugPrivilege 3820 MZ.exe Token: SeDebugPrivilege 3504 InstallUtil.exe Token: SeDebugPrivilege 2024 MZ.exe Token: SeDebugPrivilege 1272 InstallUtil.exe Token: SeDebugPrivilege 812 MZ.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
NKPOY00987900K.exepid process 2820 NKPOY00987900K.exe 2820 NKPOY00987900K.exe -
Suspicious use of WriteProcessMemory 34 IoCs
Processes:
NKPOY00987900K.exeNKPOY00987900K.exeInstallUtil.exeInstallUtil.exeInstallUtil.exedescription pid process target process PID 2280 wrote to memory of 2820 2280 NKPOY00987900K.exe NKPOY00987900K.exe PID 2280 wrote to memory of 2820 2280 NKPOY00987900K.exe NKPOY00987900K.exe PID 2280 wrote to memory of 2820 2280 NKPOY00987900K.exe NKPOY00987900K.exe PID 2280 wrote to memory of 2820 2280 NKPOY00987900K.exe NKPOY00987900K.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3368 2820 NKPOY00987900K.exe InstallUtil.exe PID 3368 wrote to memory of 3820 3368 InstallUtil.exe MZ.exe PID 3368 wrote to memory of 3820 3368 InstallUtil.exe MZ.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 3504 2820 NKPOY00987900K.exe InstallUtil.exe PID 3504 wrote to memory of 2024 3504 InstallUtil.exe MZ.exe PID 3504 wrote to memory of 2024 3504 InstallUtil.exe MZ.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 2820 wrote to memory of 1272 2820 NKPOY00987900K.exe InstallUtil.exe PID 1272 wrote to memory of 812 1272 InstallUtil.exe MZ.exe PID 1272 wrote to memory of 812 1272 InstallUtil.exe MZ.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\NKPOY00987900K.exe"C:\Users\Admin\AppData\Local\Temp\NKPOY00987900K.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\NKPOY00987900K.exe"C:\Users\Admin\AppData\Local\Temp\NKPOY00987900K.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⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- 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
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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⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- 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
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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⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- 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\Local\Microsoft\CLR_v2.0\UsageLogs\MZ.exe.logMD5
0d96352b982082afe2903d10c1b819a2
SHA137067f1193b4a3deaf27f35a09ddba8e2adee680
SHA256825a471d43d2b81bed778b2bd7a3bf1a2b22a81c3b0de3c68bc2aa9c5bebcec2
SHA512e55862d182b1f1bc1b296cb213e2c576f545120678e2be930dbcf764069ecb9eb3737cfa010c0a4861a5a20605bfae42a49b955d80006c52bd1486b7134bc2af
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\InstallUtil.exe.logMD5
a62535934fa7300b21d015be8236a2e5
SHA1d94f020f9f0f299c46c0ce9b141a3b9da0f32814
SHA2563efaf87f4602570f0be76f4bd246425060a2731f83aec474d7f354f8e6f62c70
SHA51269761425416d2de37dc8934232160e2b8912b433cf8cbfc5505bc00d0c227624808c6414297addb91c966ff27045e9c4679af916efb563576c6fa23fdff1c5a5
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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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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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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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memory/812-142-0x0000000000C40000-0x0000000000C42000-memory.dmpFilesize
8KB
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memory/812-139-0x0000000000000000-mapping.dmp
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memory/1272-138-0x0000000002EE0000-0x0000000002EE1000-memory.dmpFilesize
4KB
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memory/1272-137-0x0000000000412452-mapping.dmp
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memory/2024-131-0x0000000000000000-mapping.dmp
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memory/2024-135-0x0000000000FC0000-0x0000000000FC2000-memory.dmpFilesize
8KB
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memory/2280-120-0x000000000F3C0000-0x000000000F3C2000-memory.dmpFilesize
8KB
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memory/2820-115-0x00000000004024E0-mapping.dmp
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memory/2820-121-0x0000000000400000-0x0000000000430000-memory.dmpFilesize
192KB
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memory/3368-119-0x0000000000412452-mapping.dmp
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memory/3368-118-0x0000000000400000-0x0000000000418000-memory.dmpFilesize
96KB
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memory/3368-122-0x0000000001410000-0x0000000001411000-memory.dmpFilesize
4KB
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memory/3504-130-0x0000000000FA0000-0x0000000000FA1000-memory.dmpFilesize
4KB
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memory/3504-128-0x0000000000412452-mapping.dmp
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memory/3820-126-0x0000000002260000-0x0000000002262000-memory.dmpFilesize
8KB
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memory/3820-123-0x0000000000000000-mapping.dmp