modiloader | ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635

Analysis

max time kernel
120s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 22:28

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General

Target

ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
Size

90KB
MD5

530d1bfa37bff731468350e39d9560d0
SHA1

a06cfc0995a1771d33db76f3d4c171808aa71f92
SHA256

ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635
SHA512

4f87cfeca433bdc3fba87c9fff1bc5020b510f905062a982e245becd4505e5235080a363235ad780bf32bca4a9263e9d7300b0c816b04c7acb1e7abef804996b
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK: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/2384-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2384-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2384-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2384-62-0x0000000000400000-0x0000000000414000-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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe

Executes dropped EXE 3 IoCs

pid	Process
3908	csrsll.exe
1236	csrsll.exe
2384	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-1-5-21-1045960512-3948844814-3059691613-1000\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 3136 set thread context of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3908 set thread context of 1236	3908	csrsll.exe	97
PID 3908 set thread context of 2384	3908	csrsll.exe	98

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3136-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3136-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1464-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1464-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1464-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3136-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000f000000023bb7-29.dat	upx
behavioral2/memory/3908-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3908-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1464-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3908-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2384-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2384-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2384-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3908-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2384-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2384-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1464-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1236-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2384-62-0x0000000000400000-0x0000000000414000-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	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.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	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
3908	csrsll.exe
1236	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 3136 wrote to memory of 1464	3136	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	83
PID 1464 wrote to memory of 4772	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	84
PID 1464 wrote to memory of 4772	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	84
PID 1464 wrote to memory of 4772	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	84
PID 4772 wrote to memory of 4704	4772	cmd.exe	88
PID 4772 wrote to memory of 4704	4772	cmd.exe	88
PID 4772 wrote to memory of 4704	4772	cmd.exe	88
PID 1464 wrote to memory of 3908	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	89
PID 1464 wrote to memory of 3908	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	89
PID 1464 wrote to memory of 3908	1464	ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe	89
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 1236	3908	csrsll.exe	97
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98
PID 3908 wrote to memory of 2384	3908	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
"C:\Users\Admin\AppData\Local\Temp\ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Users\Admin\AppData\Local\Temp\ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe
  "C:\Users\Admin\AppData\Local\Temp\ad21bfe65c78b741a14601eb85a6ef68be5998983453fc0633dfd3de06da9635N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1464
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RVQYN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4772
  - - 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:4704
- - 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:3908
  - - 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:1236
  - - 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:2384

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\RVQYN.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
2835228f23780f1ffdc7518442bec650

SHA1
591455c866a07454cff10d31f85fa0000d966f75

SHA256
07fa1702482262c41a9da33e5245ec8443a87f69685933d22d7259c9e018685b

SHA512
4e8ad73fffaa4bac36d754830ff08e34903d68d6dce517184a0f57829525ed298927afca7110a7a86639ae16fe2a0f05db0bb5144723753cd8facf334a8867f5

Download Submit
memory/1236-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1464-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1464-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1464-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1464-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1464-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2384-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2384-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2384-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2384-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2384-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2384-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3136-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3136-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3136-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3136-5-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/3908-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3908-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3908-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3908-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads