modiloader | 4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591

Analysis

max time kernel
150s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 12:05

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General

Target

4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
Size

94KB
MD5

4cefdc9b66c1111d871565339dd0a40e
SHA1

b7accad6b62542bf278cb5e59c2ceacf49e53a6f
SHA256

4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591
SHA512

f36a7ba9dfb09793d718f0c1462a0a96c602f12f0896e055fac2a77ddfd2c7a13aa669f454f9af7bd6ddab55f4b976304ab367a7ca2306964785477181152e1b
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/E:/pdyLALwACPmV3NYaYLiwIt3raA5BRfl

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/4956-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4956-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4956-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4956-60-0x0000000000400000-0x0000000000414000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe

Executes dropped EXE 3 IoCs

pid	Process
1696	csrsll.exe
2188	csrsll.exe
4956	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-1-5-21-4050598569-1597076380-177084960-1000\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 2624 set thread context of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 1696 set thread context of 2188	1696	csrsll.exe	88
PID 1696 set thread context of 4956	1696	csrsll.exe	89

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2624-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/2232-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2624-11-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/2232-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2232-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-27.dat	upx
behavioral2/memory/1696-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/1696-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4956-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2232-45-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4956-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4956-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-55-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/4956-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4956-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2232-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2188-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4956-60-0x0000000000400000-0x0000000000414000-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	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.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	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
2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
1696	csrsll.exe
2188	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2624 wrote to memory of 2232	2624	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	82
PID 2232 wrote to memory of 2740	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 2232 wrote to memory of 2740	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 2232 wrote to memory of 2740	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	83
PID 2740 wrote to memory of 1292	2740	cmd.exe	86
PID 2740 wrote to memory of 1292	2740	cmd.exe	86
PID 2740 wrote to memory of 1292	2740	cmd.exe	86
PID 2232 wrote to memory of 1696	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 2232 wrote to memory of 1696	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 2232 wrote to memory of 1696	2232	4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe	87
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 2188	1696	csrsll.exe	88
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89
PID 1696 wrote to memory of 4956	1696	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
"C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2624
- C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe
  "C:\Users\Admin\AppData\Local\Temp\4aafca9bd8a171da095c64c97d8ef9458428254316246b5c7722fcae4bd6e591.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2232
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ACFQR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2740
  - - 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:1292
- - 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:1696
  - - 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:4956

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

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
5140ccea2ca52148294ef30c48b4c67c

SHA1
5d206da579899210ca6ef18a4779a787b7e995ef

SHA256
d7bd29718242b2e363543aa5df6df09a248e526c7a666d5a3effafe323bfe2cc

SHA512
9b3c36102bbfd31042bbfe43718abba4a1bb4efe8f9b7ac3ba3f202810fe2cf38552239c16e48830e074a3c94426ba3b32671a95cc0c5e944f3bfdc7a62b520b

Download Submit
memory/1696-55-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1696-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1696-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2188-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2232-45-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2232-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2232-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2232-56-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2232-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2232-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2624-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2624-3-0x0000000002420000-0x0000000002421000-memory.dmp

Filesize
4KB

Download
memory/2624-4-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/2624-11-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4956-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4956-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads