modiloader | 87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f

Analysis

max time kernel
118s
max time network
17s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 22:10

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General

Target

87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
Size

90KB
MD5

cecacee60a3fb9be553fc565f3a75111
SHA1

3e607192da971d2b01e4e5b410e639f202c30a45
SHA256

87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f
SHA512

2e7125362e61564c2a72047d399c1b46b12178742d55eba39fcf93df38bdf194b937334d6c47dc2458e179e6b23d97f4dc0708659a2e476cf0bffa39c07984c2
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD0:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3K

Score

10^/10

modiloader discovery 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 family
modiloader

ModiLoader Second Stage 2 IoCs

resource	yara_rule
behavioral1/memory/1312-253-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral1/memory/1312-257-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1884	csrsll.exe
2188	csrsll.exe
1312	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1712 set thread context of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1884 set thread context of 2188	1884	csrsll.exe	36
PID 1884 set thread context of 1312	1884	csrsll.exe	37

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1712-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1712-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1712-104-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2700-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2700-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2700-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2700-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1712-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/files/0x0009000000018718-129.dat	upx
behavioral1/memory/1884-149-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2700-143-0x0000000003480000-0x00000000034D3000-memory.dmp	upx
behavioral1/memory/2700-152-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1884-211-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1884-247-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1312-253-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2700-252-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2188-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1312-257-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe
Token: SeDebugPrivilege	2188	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
1884	csrsll.exe
2188	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 1712 wrote to memory of 2700	1712	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	31
PID 2700 wrote to memory of 1660	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	32
PID 2700 wrote to memory of 1660	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	32
PID 2700 wrote to memory of 1660	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	32
PID 2700 wrote to memory of 1660	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	32
PID 1660 wrote to memory of 1932	1660	cmd.exe	34
PID 1660 wrote to memory of 1932	1660	cmd.exe	34
PID 1660 wrote to memory of 1932	1660	cmd.exe	34
PID 1660 wrote to memory of 1932	1660	cmd.exe	34
PID 2700 wrote to memory of 1884	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	35
PID 2700 wrote to memory of 1884	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	35
PID 2700 wrote to memory of 1884	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	35
PID 2700 wrote to memory of 1884	2700	87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe	35
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 2188	1884	csrsll.exe	36
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37
PID 1884 wrote to memory of 1312	1884	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
"C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe
  "C:\Users\Admin\AppData\Local\Temp\87f75729804bb478e37b66383b772e5c2acbfe3d7352590e18ae7fa70c5fb78f.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\FQVSG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1660
  - - 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
      System Location Discovery: System Language Discovery
      PID:1932
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1884
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2188
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\FQVSG.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
7521bf5f091648f3a5ca79308abbb108

SHA1
5b5d83aa52b4a5c9f80ecb505ef0c8b4cdd0ee1e

SHA256
f5656a3b9024e0c3ac7dc5a7b0aab5542f79a67216c1b573fa1a8a573d5c0b2a

SHA512
eb50e1b52c7f767185a2501ce64f5ed9d82ef5da96130a37fc23edd74319f3f86333888b70b9963a2f5f2632a49aa2e41175a1402a21c3841e55c99c6fc44580

Download Submit
memory/1312-257-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1312-253-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1712-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1712-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1712-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1712-79-0x0000000001C20000-0x0000000001C22000-memory.dmp

Filesize
8KB

Download
memory/1712-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/1712-71-0x0000000000660000-0x0000000000661000-memory.dmp

Filesize
4KB

Download
memory/1712-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1712-104-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1712-5-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/1712-15-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/1712-29-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1712-41-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1712-61-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1884-176-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/1884-211-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1884-155-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1884-165-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/1884-247-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1884-149-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2188-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-146-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-145-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-144-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-143-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-152-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-147-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-210-0x0000000003480000-0x00000000034D3000-memory.dmp

Filesize
332KB

Download
memory/2700-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-252-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2700-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads