modiloader | 8f93a1789a69a36ef8c45597bd0b7d15d535474355dbbcebc29cdeccc22d18a9

General

Target

virussign.com_f3fb433643992f5349291c65fa8b9940.exe
Size

90KB
MD5

f3fb433643992f5349291c65fa8b9940
SHA1

ab46544ab8eecd567fe882dc992abd0b681e52cd
SHA256

8f93a1789a69a36ef8c45597bd0b7d15d535474355dbbcebc29cdeccc22d18a9
SHA512

961bf453f529b8faa0cc5626eec2b293d618c69c703aa730789b5607f1f87d2e7516412ef2ae9a06d4b34adca7f8df69cfcf1eb26c32b282914b7f67b41a4453
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

ModiLoader Second Stage 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/720-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/720-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/720-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/720-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

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:

virussign.com_f3fb433643992f5349291c65fa8b9940.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	virussign.com_f3fb433643992f5349291c65fa8b9940.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

4628 csrsll.exe
3876 csrsll.exe
720 csrsll.exe

pid	process
4628	csrsll.exe
3876	csrsll.exe
720	csrsll.exe

UPX packed file 17 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/968-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2104-4-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2104-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/968-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2104-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/4628-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4628-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/720-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4628-51-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/720-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/720-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/720-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2104-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/720-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3876-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/720-60-0x0000000000400000-0x0000000000414000-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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

virussign.com_f3fb433643992f5349291c65fa8b9940.execsrsll.exe

description	pid	process	target process
PID 968 set thread context of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 4628 set thread context of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 set thread context of 720	4628	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	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe
Token: SeDebugPrivilege	3876	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

virussign.com_f3fb433643992f5349291c65fa8b9940.exevirussign.com_f3fb433643992f5349291c65fa8b9940.execsrsll.execsrsll.exe

pid process

968 virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2104 virussign.com_f3fb433643992f5349291c65fa8b9940.exe
4628 csrsll.exe
3876 csrsll.exe

pid	process
968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
4628	csrsll.exe
3876	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

virussign.com_f3fb433643992f5349291c65fa8b9940.exevirussign.com_f3fb433643992f5349291c65fa8b9940.execmd.execsrsll.exe

description	pid	process	target process
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 968 wrote to memory of 2104	968	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 2104 wrote to memory of 2412	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2104 wrote to memory of 2412	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2104 wrote to memory of 2412	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2412 wrote to memory of 680	2412	cmd.exe	reg.exe
PID 2412 wrote to memory of 680	2412	cmd.exe	reg.exe
PID 2412 wrote to memory of 680	2412	cmd.exe	reg.exe
PID 2104 wrote to memory of 4628	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 2104 wrote to memory of 4628	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 2104 wrote to memory of 4628	2104	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 3876	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe
PID 4628 wrote to memory of 720	4628	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:968

C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2104

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RQDLC.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2412

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:680

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:4628

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:3876

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:720

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\RQDLC.txt
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

MD5
c9037dee7bd2defec66c3e4c9cbc6748

SHA1
e4f30f81bebb15d6fa57c0d04f68b07374e1a5c1

SHA256
e52f5a01b0322dc8459e1ffa8654fa0c3e88fd9f51de27f99c3b7e9a27f7a64c

SHA512
7c663bf3cb5be6e53568cf9295ad6ec4678495819d08517d2b22856d9186560125829d53edd72fa870e69da35a27fccdd9ac1e84bfcfd9c916403f4bb419405d

Download Submit
memory/720-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/720-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/720-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/720-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/720-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/720-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/968-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/968-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/968-3-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/968-9-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/968-8-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/968-7-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/2104-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2104-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2104-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2104-4-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3876-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4628-51-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4628-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4628-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads