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 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2044-261-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

1076 csrsll.exe
2276 csrsll.exe
2044 csrsll.exe

pid	process
1076	csrsll.exe
2276	csrsll.exe
2044	csrsll.exe

Loads dropped DLL 5 IoCs

Processes:

virussign.com_f3fb433643992f5349291c65fa8b9940.exe

pid	process
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe

UPX packed file 21 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1460-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1460-82-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1460-92-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1460-88-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1460-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1460-78-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2348-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2348-108-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2348-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1460-106-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2348-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2348-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2348-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral1/memory/1076-151-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1076-211-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2044-245-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1076-250-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2348-255-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2276-260-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2044-261-0x0000000000400000-0x0000000000414000-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-1-5-21-1298544033-3225604241-2703760938-1000\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 1460 set thread context of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1076 set thread context of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 set thread context of 2044	1076	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	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe
Token: SeDebugPrivilege	2276	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

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

pid process

1460 virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348 virussign.com_f3fb433643992f5349291c65fa8b9940.exe
1076 csrsll.exe
2276 csrsll.exe

pid	process
1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
1076	csrsll.exe
2276	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

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

description	pid	process	target process
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 1460 wrote to memory of 2348	1460	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	virussign.com_f3fb433643992f5349291c65fa8b9940.exe
PID 2348 wrote to memory of 2856	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2348 wrote to memory of 2856	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2348 wrote to memory of 2856	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2348 wrote to memory of 2856	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	cmd.exe
PID 2856 wrote to memory of 2220	2856	cmd.exe	reg.exe
PID 2856 wrote to memory of 2220	2856	cmd.exe	reg.exe
PID 2856 wrote to memory of 2220	2856	cmd.exe	reg.exe
PID 2856 wrote to memory of 2220	2856	cmd.exe	reg.exe
PID 2348 wrote to memory of 1076	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 2348 wrote to memory of 1076	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 2348 wrote to memory of 1076	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 2348 wrote to memory of 1076	2348	virussign.com_f3fb433643992f5349291c65fa8b9940.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2276	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	csrsll.exe	csrsll.exe
PID 1076 wrote to memory of 2044	1076	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:1460

C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2348

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\BEPQM.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:2856

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:2220

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:1076

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:2276

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:2044

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

System Information Discovery

1

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\BEPQM.bat
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

MD5
125ca1b38be8dc7634c91b99ad31aee4

SHA1
777aaf28a42e45f34eee03ffd80c7971f626e216

SHA256
3bd1347fdb47582a4374c5d6727d86b31025ce60e3dc8f5b147c7a055666834e

SHA512
798d1205f9dcbf40cd804672d3d55c02baed295775d7466faf388cf88e520b4aa17c2b1580b0caf68bff6c74bf930bb75d70fa514bfce593fb7db49f4351a4ec

Download Submit
memory/1076-250-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1076-177-0x00000000002C0000-0x00000000002C1000-memory.dmp

Filesize
4KB

Download
memory/1076-211-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1076-166-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1076-156-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1076-151-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-106-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1460-80-0x00000000003E0000-0x00000000003E2000-memory.dmp

Filesize
8KB

Download
memory/1460-92-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-88-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-78-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-93-0x0000000002540000-0x0000000002593000-memory.dmp

Filesize
332KB

Download
memory/1460-39-0x0000000000320000-0x0000000000321000-memory.dmp

Filesize
4KB

Download
memory/1460-60-0x0000000000360000-0x0000000000361000-memory.dmp

Filesize
4KB

Download
memory/1460-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1460-56-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1460-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-70-0x0000000000380000-0x0000000000381000-memory.dmp

Filesize
4KB

Download
memory/1460-15-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1460-82-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1460-27-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/2044-245-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2044-261-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2276-260-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-100-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2348-148-0x0000000003470000-0x00000000034C3000-memory.dmp

Filesize
332KB

Download
memory/2348-147-0x0000000003470000-0x00000000034C3000-memory.dmp

Filesize
332KB

Download
memory/2348-149-0x0000000003470000-0x00000000034C3000-memory.dmp

Filesize
332KB

Download
memory/2348-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-108-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-255-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2348-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads