modiloader | c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348

General

Target

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
Size

90KB
MD5

70a9958dc7b60740b4ff2cc31e67c674
SHA1

20787920945a52d9059f83dd7fec75fdc5e17b0d
SHA256

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348
SHA512

d036261142295ce54fe803beffcaf32697aeeda14b8e3d639b28da7b90fd0ea7b40081e7853b2c5c01d9788e4fd9432903e337b5431c0a9a25e6ec6af2d8489e
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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/4924-55-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4924-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 16 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4040-0-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/3432-3-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3432-10-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3432-9-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4040-14-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	UPX
behavioral2/memory/2172-36-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4924-44-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4924-50-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/2172-48-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/2172-47-0x0000000000400000-0x0000000000453000-memory.dmp	UPX
behavioral2/memory/4924-55-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/3432-58-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4060-59-0x0000000000400000-0x000000000040B000-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:

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

2172 csrsll.exe
4060 csrsll.exe
4924 csrsll.exe

pid	process
2172	csrsll.exe
4060	csrsll.exe
4924	csrsll.exe

UPX packed file 17 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4040-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3432-3-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3432-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3432-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4040-5-0x00000000021D0000-0x00000000021D2000-memory.dmp	upx
behavioral2/memory/4040-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/2172-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4924-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4924-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4924-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2172-48-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4924-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2172-47-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4924-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3432-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4060-59-0x0000000000400000-0x000000000040B000-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-1-5-21-200405930-3877336739-3533750831-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.execsrsll.exe

description	pid	process	target process
PID 4040 set thread context of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 2172 set thread context of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 set thread context of 4924	2172	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	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe
Token: SeDebugPrivilege	4060	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exec80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.execsrsll.execsrsll.exe

pid	process
4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
2172	csrsll.exe
4060	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exec80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.execmd.execsrsll.exe

description	pid	process	target process
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 4040 wrote to memory of 3432	4040	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
PID 3432 wrote to memory of 564	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	cmd.exe
PID 3432 wrote to memory of 564	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	cmd.exe
PID 3432 wrote to memory of 564	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	cmd.exe
PID 564 wrote to memory of 5116	564	cmd.exe	reg.exe
PID 564 wrote to memory of 5116	564	cmd.exe	reg.exe
PID 564 wrote to memory of 5116	564	cmd.exe	reg.exe
PID 3432 wrote to memory of 2172	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	csrsll.exe
PID 3432 wrote to memory of 2172	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	csrsll.exe
PID 3432 wrote to memory of 2172	3432	c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4060	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe
PID 2172 wrote to memory of 4924	2172	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
"C:\Users\Admin\AppData\Local\Temp\c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4040

C:\Users\Admin\AppData\Local\Temp\c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe
"C:\Users\Admin\AppData\Local\Temp\c80940307fe18b41717d9633e328625d343b3fb147fe78907a61a0a4f7b50348.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3432

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RXDEB.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:564

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:5116

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:2172

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:4060

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:4924

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\RXDEB.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

MD5
26cf990b85af3dc241c69fa58ae1e38c

SHA1
a370e205dede9834446ac4f21fbeb401133ecf09

SHA256
66d34b8db6dca4236a42e92a3d9aa91090db45a5047dd80397fc654791bbbe00

SHA512
2b32865640ca90d19c4deac79c6ec287c98b16381a51c244e5be220ba288e9468b1808c7a604f8bde3b718b19cfad541f266482a33bf9d7f5afc66998266a86d

Download Submit
memory/2172-48-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2172-47-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2172-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3432-3-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3432-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4040-4-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/4040-8-0x0000000002200000-0x0000000002202000-memory.dmp

Filesize
8KB

Download
memory/4040-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4040-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4040-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/4040-7-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/4060-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4924-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4924-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4924-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4924-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4924-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads