modiloader | b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 21:03

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General

Target

b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
Size

90KB
MD5

bc02996392c4e888ef2d40d484543058
SHA1

e488c426f36a03925abf1abf22878af5c8246d27
SHA256

b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c
SHA512

551291b40eff9f617a4b5c7f658d196ae26bb786de1023b8ef61707e78430ac5d3778aabecc30ac4b90a16102c47c76deca4ab9e3d55e5b11812745c41027685
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDu:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 4 IoCs

resource	yara_rule
behavioral2/memory/388-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/388-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/388-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/388-62-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe

Executes dropped EXE 3 IoCs

pid	Process
4356	csrsll.exe
3560	csrsll.exe
388	csrsll.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-1-5-21-2045521122-590294423-3465680274-1000\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 636 set thread context of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 4356 set thread context of 3560	4356	csrsll.exe	104
PID 4356 set thread context of 388	4356	csrsll.exe	105

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/636-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/636-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4404-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4404-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/636-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4404-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0012000000023ad1-29.dat	upx
behavioral2/memory/4404-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4356-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4356-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/388-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/388-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/388-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/388-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/388-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4356-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4404-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3560-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/388-62-0x0000000000400000-0x0000000000414000-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	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe
Token: SeDebugPrivilege	3560	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
4356	csrsll.exe
3560	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 636 wrote to memory of 4404	636	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	92
PID 4404 wrote to memory of 632	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	95
PID 4404 wrote to memory of 632	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	95
PID 4404 wrote to memory of 632	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	95
PID 632 wrote to memory of 2252	632	cmd.exe	99
PID 632 wrote to memory of 2252	632	cmd.exe	99
PID 632 wrote to memory of 2252	632	cmd.exe	99
PID 4404 wrote to memory of 4356	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	100
PID 4404 wrote to memory of 4356	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	100
PID 4404 wrote to memory of 4356	4404	b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe	100
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 3560	4356	csrsll.exe	104
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105
PID 4356 wrote to memory of 388	4356	csrsll.exe	105

C:\Users\Admin\AppData\Local\Temp\b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
"C:\Users\Admin\AppData\Local\Temp\b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe
  "C:\Users\Admin\AppData\Local\Temp\b1c5c8d94d92e0d2896ff6e4e7ece644797e710531f705f3a2e08a0c52e8452c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4404
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\INKKV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:632
  - - 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:2252
- - 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:4356
  - - 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:3560
  - - 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:388

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

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\INKKV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
7af764b1827b4bbf76381397c745c1d8

SHA1
a798d7f8f607a8ea73a67cc5ce3b2fcdb6d6932c

SHA256
3aa031b7fbaa6737fd1a713fc89bac9af4402cbbcbdf3d9b84b57cc3211e660c

SHA512
44ed283450b3d36b8d70e79d30ffcdabd3be1699ef93dbac464bffc0e16903a622c0032fce0d5338f55d78db17a8706a4366acf639d42ef4d5f94248915c1b5d

Download Submit
memory/388-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/388-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/388-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/388-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/388-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/388-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/636-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/636-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/636-5-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/636-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/636-6-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/636-3-0x0000000002A10000-0x0000000002A12000-memory.dmp

Filesize
8KB

Download
memory/3560-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4356-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4356-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4356-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4404-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4404-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4404-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4404-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4404-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4404-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads