modiloader | 684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68

General

Target

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
Size

90KB
MD5

c4f8742a794575102f1cf3e9c1080d81
SHA1

81e63f566a45ca620b31ded118e6639d5fcdb989
SHA256

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68
SHA512

bc076cf9de95dac7273883b66604c63ee936dd1cc906f783a2ce4b794a7b362047e3e0a756d3194a165cb4a541d818624a2d03ef08a01d4c6da85b39e022e066
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Detects Windows executables referencing non-Windows User-Agents 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4592-53-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4592-54-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4592-55-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4592-57-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4592-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4592-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4996-0-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4888-3-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4888-5-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4996-7-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	UPX
behavioral2/memory/3104-33-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/3104-36-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4592-41-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/3104-49-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4888-52-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4592-47-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4592-53-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4592-54-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4592-55-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/2920-56-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4592-57-0x0000000000400000-0x0000000000414000-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:

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

3104 csrsll.exe
2920 csrsll.exe
4592 csrsll.exe

pid	process
3104	csrsll.exe
2920	csrsll.exe
4592	csrsll.exe

UPX packed file 17 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4996-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4888-3-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4888-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4996-7-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/3104-33-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3104-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4592-41-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3104-49-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4888-52-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4592-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4592-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4592-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4592-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2920-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4592-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.execsrsll.exe

description	pid	process	target process
PID 4996 set thread context of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 3104 set thread context of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 set thread context of 4592	3104	csrsll.exe	csrsll.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe
Token: SeDebugPrivilege	2920	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.execsrsll.execsrsll.exe

pid	process
4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
3104	csrsll.exe
2920	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.execmd.execsrsll.exe

description	pid	process	target process
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4996 wrote to memory of 4888	4996	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
PID 4888 wrote to memory of 3644	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	cmd.exe
PID 4888 wrote to memory of 3644	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	cmd.exe
PID 4888 wrote to memory of 3644	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	cmd.exe
PID 3644 wrote to memory of 3196	3644	cmd.exe	reg.exe
PID 3644 wrote to memory of 3196	3644	cmd.exe	reg.exe
PID 3644 wrote to memory of 3196	3644	cmd.exe	reg.exe
PID 4888 wrote to memory of 3104	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	csrsll.exe
PID 4888 wrote to memory of 3104	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	csrsll.exe
PID 4888 wrote to memory of 3104	4888	684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 2920	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe
PID 3104 wrote to memory of 4592	3104	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
"C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4996

C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe
"C:\Users\Admin\AppData\Local\Temp\684a157be9083cd648256b92fd1e0a9ac08c9df438f91b76122e0a265094ad68.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4888

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KKXEN.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:3644

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
4⤵
- Adds Run key to start application
PID:3196

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3104

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2920

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:4592

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\KKXEN.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Filesize
90KB

MD5
a46ca91339c0e433f9bf0c97b4dc0d51

SHA1
ae26b8ae15b2cbe38dd4cac4b0e0c73e77542ecb

SHA256
fc6ab4fc6d1be0b6438a33e6d5d584c2c70243b199ec67ce0bf693f6d4cfa03e

SHA512
a1b47b079760c5f7ff3570423763ba550407bab2c5f051884646c88935a8dde3be5163550ceea0101c30ea98b6e8f389f0e8a0beaf009260c915259336eecb7b

Download Submit
memory/2920-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3104-33-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3104-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3104-49-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4592-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-41-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4592-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-50-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4888-52-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4888-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4996-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4996-7-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads