modiloader | a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989a

Analysis

max time kernel
120s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10-11-2024 14:03

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General

Target

a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
Size

90KB
MD5

80968a3709f86e793d4b4aeb6b51bb40
SHA1

b5114dc33daada873a233b94eb8482af5d10d865
SHA256

a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989a
SHA512

56341b1a4744134a014f0edf594543b2a9f54f3145524cb4507d1e99d15046d3a41e8333b8ff8584a6201889dbd887e5dc38370e7c39469bec2e9c4f2b8e1ab2
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/1848-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1848-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1848-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1848-64-0x0000000000400000-0x0000000000414000-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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe

Executes dropped EXE 3 IoCs

pid	Process
1004	csrsll.exe
4552	csrsll.exe
1848	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-1-5-21-493223053-2004649691-1575712786-1000\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 1644 set thread context of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1004 set thread context of 4552	1004	csrsll.exe	105
PID 1004 set thread context of 1848	1004	csrsll.exe	106

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1644-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3468-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3468-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1644-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3468-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1644-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0010000000023b88-29.dat	upx
behavioral2/memory/1004-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3468-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1004-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1004-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1848-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1848-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1848-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1848-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1004-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1848-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3468-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4552-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1848-64-0x0000000000400000-0x0000000000414000-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	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.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	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe
Token: SeDebugPrivilege	4552	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
1004	csrsll.exe
4552	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 1644 wrote to memory of 3468	1644	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	95
PID 3468 wrote to memory of 3096	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	96
PID 3468 wrote to memory of 3096	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	96
PID 3468 wrote to memory of 3096	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	96
PID 3096 wrote to memory of 4280	3096	cmd.exe	100
PID 3096 wrote to memory of 4280	3096	cmd.exe	100
PID 3096 wrote to memory of 4280	3096	cmd.exe	100
PID 3468 wrote to memory of 1004	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	102
PID 3468 wrote to memory of 1004	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	102
PID 3468 wrote to memory of 1004	3468	a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe	102
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 4552	1004	csrsll.exe	105
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106
PID 1004 wrote to memory of 1848	1004	csrsll.exe	106

C:\Users\Admin\AppData\Local\Temp\a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
"C:\Users\Admin\AppData\Local\Temp\a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe
  "C:\Users\Admin\AppData\Local\Temp\a3113c9df906abcae4b7aae6d8535f226c2544443207885a625d685f97a0989aN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3468
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DRQCK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3096
  - - 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:4280
- - 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:1004
  - - 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:4552
  - - 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:1848

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\DRQCK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
aefc585337cf7eae89ab211b7b72d2a6

SHA1
b2ff7c5071d5d34c5a1aa11da6995221f6280324

SHA256
701cf51c9f33c41427511200a507191f1ac178ba972e5a8ae9bd4e279cf13d3a

SHA512
947e9f74ccf598de7495aad2b9b661b82831d1e4425a350f5bbe88e1010d029758468b7852cf1981163d4d54b2d1c4f30d8db7fda0792310baa0c1a8fd2440e6

Download Submit
memory/1004-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1004-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1004-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1004-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1644-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1644-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1644-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/1644-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1644-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1644-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1848-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1848-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1848-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1848-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1848-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1848-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3468-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4552-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads