Analysis
-
max time kernel
144s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
18-04-2023 14:19
Static task
static1
Behavioral task
behavioral1
Sample
tmp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
tmp.exe
Resource
win10v2004-20230220-en
General
-
Target
tmp.exe
-
Size
3.3MB
-
MD5
a3b10f3a5f223f5098ec991f21ab85aa
-
SHA1
04765416947784368adaf3bea627bcd3c817f0f8
-
SHA256
be817248c8fc124a548b2187aa95fca5b2a5de02cabbd18a2463d2cb5a1593ab
-
SHA512
77d3183c13b0f70f963d9fe271c2f5889710d09a7acdf95650d8ac20b21009a0078803922803c73fcb237d5c6f070f7a016e6b13e8635d98a3f3df83c1292979
-
SSDEEP
98304:Wbjsyw3BKLujJ5iV0hH1bRWydCOHoFN6WtljaEy9/FLOAkGkzdnEVomFHKnP:We3YY1bRWybHmN6WtljaEylFLOyomFHo
Malware Config
Signatures
-
Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
-
Chinese Botnet payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4772-133-0x0000000003040000-0x0000000003066000-memory.dmp unk_chinese_botnet behavioral2/memory/4772-134-0x0000000010000000-0x0000000010027000-memory.dmp unk_chinese_botnet -
Downloads MZ/PE file
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
tmp.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation tmp.exe -
Executes dropped EXE 1 IoCs
Processes:
Windowsfig.exepid process 2288 Windowsfig.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 4972 2288 WerFault.exe Windowsfig.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
Windowsfig.exepid process 2288 Windowsfig.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Windowsfig.exedescription pid process Token: SeDebugPrivilege 2288 Windowsfig.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
tmp.exepid process 4772 tmp.exe -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
tmp.exedescription pid process target process PID 4772 wrote to memory of 2288 4772 tmp.exe Windowsfig.exe PID 4772 wrote to memory of 2288 4772 tmp.exe Windowsfig.exe PID 4772 wrote to memory of 2288 4772 tmp.exe Windowsfig.exe PID 4772 wrote to memory of 4548 4772 tmp.exe cmd.exe PID 4772 wrote to memory of 4548 4772 tmp.exe cmd.exe PID 4772 wrote to memory of 4548 4772 tmp.exe cmd.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\tmp.exe"C:\Users\Admin\AppData\Local\Temp\tmp.exe"1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Windowsfig.exe"C:\ProgramData\Windowsfig.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 13083⤵
- Program crash
-
C:\Windows\SysWOW64\cmd.execmd /C "del /F /S /Q /A C:\ProgramData\Windowsfig.exe"2⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2288 -ip 22881⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
C:\ProgramData\Windowsfig.exeFilesize
108KB
MD540528a8ce542af784cb9958552f7798d
SHA158c5ba782f367a1d65bf712ada150fe0b5e14292
SHA25646780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc
SHA512dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a
-
C:\ProgramData\Windowsfig.exeFilesize
108KB
MD540528a8ce542af784cb9958552f7798d
SHA158c5ba782f367a1d65bf712ada150fe0b5e14292
SHA25646780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc
SHA512dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a
-
C:\ProgramData\Windowsfig.exeFilesize
108KB
MD540528a8ce542af784cb9958552f7798d
SHA158c5ba782f367a1d65bf712ada150fe0b5e14292
SHA25646780be1f3276ff325e105b85d5cac13b1eae75b04d17340bca01c7d63027cfc
SHA512dad82f72882e2a7ca2fe4cea7360150bdffe394dca582f7afdc378ff6e77578e3dd12da668bf2297532b3d2475d97838571cca6343c4a7515d26449acf287e0a
-
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2kug0i1d.ty1.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
memory/2288-180-0x0000000006F20000-0x0000000006FB6000-memory.dmpFilesize
600KB
-
memory/2288-181-0x0000000006ED0000-0x0000000006EF2000-memory.dmpFilesize
136KB
-
memory/2288-166-0x0000000009370000-0x0000000009998000-memory.dmpFilesize
6.2MB
-
memory/2288-167-0x0000000005790000-0x00000000057A0000-memory.dmpFilesize
64KB
-
memory/2288-200-0x0000000005790000-0x00000000057A0000-memory.dmpFilesize
64KB
-
memory/2288-177-0x0000000006DE0000-0x0000000006DFA000-memory.dmpFilesize
104KB
-
memory/2288-178-0x0000000006E40000-0x0000000006E76000-memory.dmpFilesize
216KB
-
memory/2288-179-0x0000000007C40000-0x00000000082BA000-memory.dmpFilesize
6.5MB
-
memory/2288-199-0x00000000FF4F0000-0x00000000FF500000-memory.dmpFilesize
64KB
-
memory/2288-165-0x0000000000DD0000-0x0000000000DF0000-memory.dmpFilesize
128KB
-
memory/2288-182-0x0000000007030000-0x0000000007096000-memory.dmpFilesize
408KB
-
memory/2288-183-0x00000000082C0000-0x0000000008864000-memory.dmpFilesize
5.6MB
-
memory/2288-184-0x0000000007000000-0x000000000701E000-memory.dmpFilesize
120KB
-
memory/2288-185-0x00000000070F0000-0x000000000713A000-memory.dmpFilesize
296KB
-
memory/2288-186-0x0000000008870000-0x00000000088D6000-memory.dmpFilesize
408KB
-
memory/2288-187-0x00000000088E0000-0x0000000008902000-memory.dmpFilesize
136KB
-
memory/2288-197-0x0000000005AE0000-0x0000000005AFE000-memory.dmpFilesize
120KB
-
memory/2288-198-0x00000000066D0000-0x00000000066DA000-memory.dmpFilesize
40KB
-
memory/4772-133-0x0000000003040000-0x0000000003066000-memory.dmpFilesize
152KB
-
memory/4772-134-0x0000000010000000-0x0000000010027000-memory.dmpFilesize
156KB