modiloader | 6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38

Analysis

max time kernel
119s
max time network
120s
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 19:27

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General

Target

6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
Size

90KB
MD5

80d7b2af4b8593074bd71f63cf1ca8f0
SHA1

5e5526ae598e09d7fb917398ff6a46bdd44ae4ee
SHA256

6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38
SHA512

c98ef7e29d1d0665b525b8af2dfea58c836052cc35deb71336d37d4821f86796b7575c3bb91310d1d4e96c6e812089271b00a27ff0ef26e74a4c7dce1d014f6d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD1:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3L

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/4996-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4996-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4996-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4996-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe

Executes dropped EXE 3 IoCs

pid	Process
1516	csrsll.exe
5112	csrsll.exe
4996	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-1-5-21-2045521122-590294423-3465680274-1000\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 1504 set thread context of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1516 set thread context of 5112	1516	csrsll.exe	102
PID 1516 set thread context of 4996	1516	csrsll.exe	103

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1504-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1504-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2392-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2392-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1504-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2392-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2392-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb0-29.dat	upx
behavioral2/memory/2392-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1516-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4996-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2392-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1516-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4996-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4996-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4996-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4996-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1516-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5112-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4996-62-0x0000000000400000-0x0000000000414000-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	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	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe
Token: SeDebugPrivilege	5112	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
1516	csrsll.exe
5112	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 1504 wrote to memory of 2392	1504	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	83
PID 2392 wrote to memory of 2592	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	91
PID 2392 wrote to memory of 2592	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	91
PID 2392 wrote to memory of 2592	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	91
PID 2592 wrote to memory of 1936	2592	cmd.exe	95
PID 2592 wrote to memory of 1936	2592	cmd.exe	95
PID 2592 wrote to memory of 1936	2592	cmd.exe	95
PID 2392 wrote to memory of 1516	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	96
PID 2392 wrote to memory of 1516	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	96
PID 2392 wrote to memory of 1516	2392	6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe	96
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 5112	1516	csrsll.exe	102
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103
PID 1516 wrote to memory of 4996	1516	csrsll.exe	103

C:\Users\Admin\AppData\Local\Temp\6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
"C:\Users\Admin\AppData\Local\Temp\6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Temp\6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe
  "C:\Users\Admin\AppData\Local\Temp\6d231fd6362c6394f25a65c09d7c1f8f89b5f97335626931ba1b331f391e0e38N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YXJRJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2592
  - - 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:1936
- - 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:1516
  - - 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:5112
  - - 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:4996

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\YXJRJ.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
3ea83cac83b7a8299800e33b85b7fde4

SHA1
1f4e6a74b617b3986d104ab810529b0c1a33ca19

SHA256
8143098b57ff2ff162b6648c990cee7c6b5663d88da14f29ac368b0ce6dc64a7

SHA512
1a0f0525a8f4521353269ba142976c1f1f52101d5eb2bacb14375c74b66e2663825441a020e6bfb789f641bfde5fda8c3bcc8374c36b8c0b0006269e0da497ef

Download Submit
memory/1504-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/1504-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1504-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/1504-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1504-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1504-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1516-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1516-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1516-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2392-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2392-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2392-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2392-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2392-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2392-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4996-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4996-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4996-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4996-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4996-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4996-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5112-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads