modiloader | e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644

Analysis

max time kernel
118s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-12-2024 03:16

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General

Target

e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe
Size

90KB
MD5

ed4e47640b4e9ba3f999ff71dba397a0
SHA1

fd228593c717a9e0c78d083b88e317f0ef1087cf
SHA256

e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644
SHA512

ce62d97b810a2210d4c866385f5f2d71c9e8fb6f3ecc9317440595ae8b38fdeca9ff86019924c564e6449e8974eb06fff5a09354d57d6863f669dbead15616d6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3j

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/4012-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4012-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4012-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4012-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe

Executes dropped EXE 3 IoCs

pid	Process
1492	csrsll.exe
4704	csrsll.exe
4012	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-1-5-21-3350944739-639801879-157714471-1000\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 3844 set thread context of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 1492 set thread context of 4704	1492	csrsll.exe	101
PID 1492 set thread context of 4012	1492	csrsll.exe	102

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3844-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3844-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/968-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/968-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3844-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/968-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-29.dat	upx
behavioral2/memory/1492-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/968-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1492-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1492-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4012-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4012-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4012-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4012-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1492-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4012-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/968-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4704-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4012-63-0x0000000000400000-0x0000000000414000-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	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe
Token: SeDebugPrivilege	4704	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe
968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe
1492	csrsll.exe
4704	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 3844 wrote to memory of 968	3844	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	89
PID 968 wrote to memory of 2000	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	90
PID 968 wrote to memory of 2000	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	90
PID 968 wrote to memory of 2000	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	90
PID 2000 wrote to memory of 4308	2000	cmd.exe	94
PID 2000 wrote to memory of 4308	2000	cmd.exe	94
PID 2000 wrote to memory of 4308	2000	cmd.exe	94
PID 968 wrote to memory of 1492	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	95
PID 968 wrote to memory of 1492	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	95
PID 968 wrote to memory of 1492	968	e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe	95
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4704	1492	csrsll.exe	101
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102
PID 1492 wrote to memory of 4012	1492	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe
"C:\Users\Admin\AppData\Local\Temp\e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3844
- C:\Users\Admin\AppData\Local\Temp\e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe
  "C:\Users\Admin\AppData\Local\Temp\e4cf3fc0644d1297cbf9f30db8f971cf9f37219843a2a74844f71f8cac35a644N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:968
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OESOM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2000
  - - 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:4308
- - 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:1492
  - - 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:4704
  - - 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:4012

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\OESOM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
2a2e7dcc20f2b15f4617886e2f1337d2

SHA1
aa691472423057edc3b6f2cc717a27458ddfd57f

SHA256
8234e2a21c0c7ff6f32684ce880b15c531b22837cbf01c9b45492702835800f9

SHA512
ca3e74ce39e92452b5205dd2c366d8655dfeb8dd2cec1b8ef5d5fbf7ea17bc6935dc0302c9850721ffd96d1a7691f17822328183ceb5dadc6fa7d07bfc8044af

Download Submit
memory/968-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/968-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/968-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/968-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/968-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1492-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1492-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1492-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1492-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3844-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/3844-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3844-3-0x0000000002A20000-0x0000000002A22000-memory.dmp

Filesize
8KB

Download
memory/3844-5-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/3844-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3844-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4012-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4012-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4704-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads