modiloader | cdb193314c1cf8c960cb20407ebd32ebe97caef67ffe8a1b174069f62f535e7b

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
15/09/2024, 10:07

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General

Target

a74d7423c25a37ebbd6b9ac9f11d7270N.exe
Size

90KB
MD5

a74d7423c25a37ebbd6b9ac9f11d7270
SHA1

0432d9da1dfad0442e2b837d7e310082908b49cd
SHA256

cdb193314c1cf8c960cb20407ebd32ebe97caef67ffe8a1b174069f62f535e7b
SHA512

6a24bd87982174af21480e1b6670d195591a81ae543043c224fd1f9acb76dee331ddb88b852920e56201228f8fa1b8cd4cc309bd93448439201deb3839864eac
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4344-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4344-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4344-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4344-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	a74d7423c25a37ebbd6b9ac9f11d7270N.exe

Executes dropped EXE 3 IoCs

pid	Process
3100	csrsll.exe
2688	csrsll.exe
4344	csrsll.exe

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/920-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/920-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1444-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1444-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/920-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1444-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b0000000233b0-29.dat	upx
behavioral2/memory/1444-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3100-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3100-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4344-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4344-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4344-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4344-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3100-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4344-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1444-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2688-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4344-62-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-2170637797-568393320-3232933035-1000\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 920 set thread context of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 3100 set thread context of 2688	3100	csrsll.exe	107
PID 3100 set thread context of 4344	3100	csrsll.exe	108

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	a74d7423c25a37ebbd6b9ac9f11d7270N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a74d7423c25a37ebbd6b9ac9f11d7270N.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	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe
Token: SeDebugPrivilege	2688	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe
1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe
3100	csrsll.exe
2688	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 920 wrote to memory of 1444	920	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	99
PID 1444 wrote to memory of 4680	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	100
PID 1444 wrote to memory of 4680	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	100
PID 1444 wrote to memory of 4680	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	100
PID 4680 wrote to memory of 976	4680	cmd.exe	103
PID 4680 wrote to memory of 976	4680	cmd.exe	103
PID 4680 wrote to memory of 976	4680	cmd.exe	103
PID 1444 wrote to memory of 3100	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	104
PID 1444 wrote to memory of 3100	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	104
PID 1444 wrote to memory of 3100	1444	a74d7423c25a37ebbd6b9ac9f11d7270N.exe	104
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 2688	3100	csrsll.exe	107
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108
PID 3100 wrote to memory of 4344	3100	csrsll.exe	108

C:\Users\Admin\AppData\Local\Temp\a74d7423c25a37ebbd6b9ac9f11d7270N.exe
"C:\Users\Admin\AppData\Local\Temp\a74d7423c25a37ebbd6b9ac9f11d7270N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:920
- C:\Users\Admin\AppData\Local\Temp\a74d7423c25a37ebbd6b9ac9f11d7270N.exe
  "C:\Users\Admin\AppData\Local\Temp\a74d7423c25a37ebbd6b9ac9f11d7270N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1444
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CSTQL.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4680
  - - 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:976
- - 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:3100
  - - 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:2688
  - - 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:4344

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3960,i,15436195446242760253,4000484513008731869,262144 --variations-seed-version --mojo-platform-channel-handle=1308 /prefetch:8
1⤵
PID:4284

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\CSTQL.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a74d7423c25a37ebbd6b9ac9f11d7270

SHA1
0432d9da1dfad0442e2b837d7e310082908b49cd

SHA256
cdb193314c1cf8c960cb20407ebd32ebe97caef67ffe8a1b174069f62f535e7b

SHA512
6a24bd87982174af21480e1b6670d195591a81ae543043c224fd1f9acb76dee331ddb88b852920e56201228f8fa1b8cd4cc309bd93448439201deb3839864eac

Download Submit
memory/920-6-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/920-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/920-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/920-4-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/920-3-0x00000000022D0000-0x00000000022D2000-memory.dmp

Filesize
8KB

Download
memory/920-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1444-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1444-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1444-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1444-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1444-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1444-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2688-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3100-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3100-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3100-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4344-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4344-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4344-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4344-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4344-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4344-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads