modiloader | 3f37fd68d7d8a54584ab421980a8e9273e679e62b99077a5ddbaad56de930130

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 03:37

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General

Target

cd52912890fa4bbff5e3e682879cacd0N.exe
Size

90KB
MD5

cd52912890fa4bbff5e3e682879cacd0
SHA1

29b3a4a77132dbde63a963828553c3f2f097dd65
SHA256

3f37fd68d7d8a54584ab421980a8e9273e679e62b99077a5ddbaad56de930130
SHA512

f9608d641f6ef40d441f1e9454f02d8af414acac66d75fb7b15d1e936fb981ce24a1aa3c790992385bf369d80dbcf3abae6f347b1ca3c10093b1d15cfeb8bba4
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/4128-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4128-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4128-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4128-63-0x0000000000400000-0x0000000000414000-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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	cd52912890fa4bbff5e3e682879cacd0N.exe

Executes dropped EXE 3 IoCs

pid	Process
2004	csrsll.exe
1732	csrsll.exe
4128	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4328-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4328-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2928-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2928-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2928-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4328-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b00000002342b-29.dat	upx
behavioral2/memory/2004-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2928-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2004-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2004-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4128-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4128-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4128-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4128-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4128-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2004-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2928-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1732-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4128-63-0x0000000000400000-0x0000000000414000-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-1-5-21-945322488-2060912225-3527527000-1000\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 4328 set thread context of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 2004 set thread context of 1732	2004	csrsll.exe	99
PID 2004 set thread context of 4128	2004	csrsll.exe	100

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	cd52912890fa4bbff5e3e682879cacd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd52912890fa4bbff5e3e682879cacd0N.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	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe
Token: SeDebugPrivilege	1732	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4328	cd52912890fa4bbff5e3e682879cacd0N.exe
2928	cd52912890fa4bbff5e3e682879cacd0N.exe
2004	csrsll.exe
1732	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 4328 wrote to memory of 2928	4328	cd52912890fa4bbff5e3e682879cacd0N.exe	91
PID 2928 wrote to memory of 3600	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	92
PID 2928 wrote to memory of 3600	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	92
PID 2928 wrote to memory of 3600	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	92
PID 3600 wrote to memory of 2288	3600	cmd.exe	95
PID 3600 wrote to memory of 2288	3600	cmd.exe	95
PID 3600 wrote to memory of 2288	3600	cmd.exe	95
PID 2928 wrote to memory of 2004	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	96
PID 2928 wrote to memory of 2004	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	96
PID 2928 wrote to memory of 2004	2928	cd52912890fa4bbff5e3e682879cacd0N.exe	96
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 1732	2004	csrsll.exe	99
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100
PID 2004 wrote to memory of 4128	2004	csrsll.exe	100

C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe
"C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe
  "C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2928
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YCMSK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3600
  - - 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:2288
- - 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:2004
  - - 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:1732
  - - 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:4128

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\YCMSK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
94f9ac958ef5ef3b97c1a8dbf1d383cc

SHA1
507352699f6a3aaf9bb7841fac166fd142f160d5

SHA256
c90bbf13d1e225e2b30bbc08ad9d64a28bef9892821f3f1fbf191f66637cf4b7

SHA512
a0048ac6f5a17071d6f465b1e6a8ccd30819e1e8ff57ac95cd2b8849f8b73b17a63ac7d6269e7a61e53629f1a3c466cb3c947b4c486832f74b4e737ba60bfd36

Download Submit
memory/1732-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2004-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2004-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2004-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2004-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2928-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2928-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4128-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4128-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4128-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4128-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4128-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4128-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4328-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4328-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4328-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4328-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/4328-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4328-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads