modiloader | 4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 21:22

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General

Target

4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
Size

90KB
MD5

ac72e621104fb27fa4ecec590c4472d8
SHA1

d63d139554f0bf020fe906b31b539a408a66ed92
SHA256

4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31
SHA512

dc7c7ed5f1145ba529f39ffe058d1fa8d8d30a0e844d534afd006fd2d52acf060cfd4135012d26bc4836e34515c54f195987fb5076923673157b845c14c1d7bb
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDt:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3r

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/644-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/644-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/644-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/644-60-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe

Executes dropped EXE 3 IoCs

pid	Process
2736	csrsll.exe
1196	csrsll.exe
644	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-1-5-21-2437139445-1151884604-3026847218-1000\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 4840 set thread context of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 2736 set thread context of 1196	2736	csrsll.exe	96
PID 2736 set thread context of 644	2736	csrsll.exe	97

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4840-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4840-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4832-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4832-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4832-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4840-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000c000000023b94-29.dat	upx
behavioral2/memory/4832-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2736-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2736-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/644-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/644-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/644-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/644-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/644-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2736-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4832-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1196-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/644-60-0x0000000000400000-0x0000000000414000-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	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.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	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe
Token: SeDebugPrivilege	1196	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
2736	csrsll.exe
1196	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4840 wrote to memory of 4832	4840	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	84
PID 4832 wrote to memory of 4300	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	85
PID 4832 wrote to memory of 4300	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	85
PID 4832 wrote to memory of 4300	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	85
PID 4300 wrote to memory of 4152	4300	cmd.exe	89
PID 4300 wrote to memory of 4152	4300	cmd.exe	89
PID 4300 wrote to memory of 4152	4300	cmd.exe	89
PID 4832 wrote to memory of 2736	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	90
PID 4832 wrote to memory of 2736	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	90
PID 4832 wrote to memory of 2736	4832	4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe	90
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 1196	2736	csrsll.exe	96
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97
PID 2736 wrote to memory of 644	2736	csrsll.exe	97

C:\Users\Admin\AppData\Local\Temp\4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
"C:\Users\Admin\AppData\Local\Temp\4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Users\Admin\AppData\Local\Temp\4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe
  "C:\Users\Admin\AppData\Local\Temp\4a9f0a9937ff607816312f3805ce357cacd1c37c12d21d01184192149c832c31.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4832
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FGDLE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4300
  - - 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:4152
- - 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:2736
  - - 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:1196
  - - 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:644

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\FGDLE.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
eca45013691301be5aa2f7cdce1d0fa6

SHA1
47d8cad87faf3bcff7ac8f0a7163cdf05c664c35

SHA256
5e6b6051ca49597b5e2180b3dadc40e010f3192eda9973e7925faff30a915d0d

SHA512
0c425b6bdc0a172354931f13b665b5af2da38eace09f66bcbb5837bd7ddea2996c79624ee84f23edbb708855532cf3bd7df824f9685125ee19b3b2405f2a82ab

Download Submit
memory/644-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/644-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/644-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/644-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/644-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/644-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1196-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4832-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4832-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-6-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/4840-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4840-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4840-4-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/4840-3-0x0000000002400000-0x0000000002402000-memory.dmp

Filesize
8KB

Download
memory/4840-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads