9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4

General

Target

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Size

680KB
MD5

16ade8439c7db524afcf1b6556868082
SHA1

04f501639b26b23c74aa245db747c524f7a49aa8
SHA256

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4
SHA512

437dfbaf6a003256f7ba547710df9a5667a1004486d389e4537b01b4de646dd6cebdb060448bffecfd39c23d7882ec20e48776a10ba9affdafdda71631e56e42
SSDEEP

12288:cjkArEN249AyE/rbaMct4bO2/VRgIAWs/Kok9SfDQP:PFE//Tct4bOsUeok9y8

Score

10^/10

evasion persistence trojan upx

Malware Config

Signatures

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.execsrcs.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	csrcs.exe

Adds policy Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.execsrcs.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	csrcs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	csrcs.exe

Executes dropped EXE 1 IoCs

Processes:

csrcs.exe

pid process

4972 csrcs.exe

pid	process
4972	csrcs.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2376-132-0x0000000000400000-0x0000000000504000-memory.dmp	upx
C:\Windows\SysWOW64\csrcs.exe	upx
C:\Windows\SysWOW64\csrcs.exe	upx
behavioral2/memory/4972-136-0x0000000000400000-0x0000000000504000-memory.dmp	upx
behavioral2/memory/2376-137-0x0000000000400000-0x0000000000504000-memory.dmp	upx
behavioral2/memory/4972-138-0x0000000000400000-0x0000000000504000-memory.dmp	upx

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

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

csrcs.exe9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	csrcs.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices\csrcs = "C:\\Windows\\SysWOW64\\csrcs.exe"	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\RunServices	csrcs.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.execsrcs.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	csrcs.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.

Processes:

flow ioc

45 checkip.dyndns.org

flow	ioc
45	checkip.dyndns.org

AutoIT Executable 3 IoCs

AutoIT scripts compiled to PE executables.

Processes:

resource	yara_rule
behavioral2/memory/4972-136-0x0000000000400000-0x0000000000504000-memory.dmp	autoit_exe
behavioral2/memory/2376-137-0x0000000000400000-0x0000000000504000-memory.dmp	autoit_exe
behavioral2/memory/4972-138-0x0000000000400000-0x0000000000504000-memory.dmp	autoit_exe

Drops file in System32 directory 4 IoCs

Processes:

csrcs.exe9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\autorun.i	csrcs.exe
File created	C:\Windows\SysWOW64\csrcs.exe	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
File opened for modification	C:\Windows\SysWOW64\csrcs.exe	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
File opened for modification	C:\Windows\SysWOW64\autorun.in	csrcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

pid	process
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.execsrcs.exe

pid	process
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
4972	csrcs.exe
4972	csrcs.exe
4972	csrcs.exe

Suspicious use of SendNotifyMessage 6 IoCs

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.execsrcs.exe

pid	process
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
4972	csrcs.exe
4972	csrcs.exe
4972	csrcs.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe

description	pid	process	target process
PID 2376 wrote to memory of 4972	2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe	csrcs.exe
PID 2376 wrote to memory of 4972	2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe	csrcs.exe
PID 2376 wrote to memory of 4972	2376	9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe	csrcs.exe

C:\Users\Admin\AppData\Local\Temp\9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe
"C:\Users\Admin\AppData\Local\Temp\9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2376

C:\Windows\SysWOW64\csrcs.exe
"C:\Windows\SysWOW64\csrcs.exe"
2⤵
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4972

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

1

T1158

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\csrcs.exe

Filesize
680KB

MD5
16ade8439c7db524afcf1b6556868082

SHA1
04f501639b26b23c74aa245db747c524f7a49aa8

SHA256
9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4

SHA512
437dfbaf6a003256f7ba547710df9a5667a1004486d389e4537b01b4de646dd6cebdb060448bffecfd39c23d7882ec20e48776a10ba9affdafdda71631e56e42

Download Submit
C:\Windows\SysWOW64\csrcs.exe

Filesize
680KB

MD5
16ade8439c7db524afcf1b6556868082

SHA1
04f501639b26b23c74aa245db747c524f7a49aa8

SHA256
9db29784f8562d4e455d9eaa4e7bd604e423a4e2cfb2bfbc4566cd0cfe9b69a4

SHA512
437dfbaf6a003256f7ba547710df9a5667a1004486d389e4537b01b4de646dd6cebdb060448bffecfd39c23d7882ec20e48776a10ba9affdafdda71631e56e42

Download Submit
memory/2376-132-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download
memory/2376-137-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download
memory/4972-133-0x0000000000000000-mapping.dmp

Download
memory/4972-136-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download
memory/4972-138-0x0000000000400000-0x0000000000504000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads