modiloader | 711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c

General

Target

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
Size

90KB
MD5

e141e62d0421a38a917bc7b55147d167
SHA1

218b42c38c7716a0a061b910db8d72359e7f6af6
SHA256

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c
SHA512

50730eefb7224c8fd54bf56264aafad1a22134516d4b5e63273a013a09ab549f3e0a9bd242c55d2a61becfcf4ba9c0e61a4969f9c9dfb9bcae8a47b2fdf8c809
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD7:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE31

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

Processes:

resource	yara_rule
behavioral2/memory/3384-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3384-62-0x0000000000400000-0x0000000000414000-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

Processes:

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

3132 csrsll.exe
4232 csrsll.exe
3384 csrsll.exe

pid	process
3132	csrsll.exe
4232	csrsll.exe
3384	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.execsrsll.exe

description	pid	process	target process
PID 984 set thread context of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 3132 set thread context of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 set thread context of 3384	3132	csrsll.exe	csrsll.exe

UPX packed file 19 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/984-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/984-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2268-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2268-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2268-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/984-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/2268-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3132-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3132-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3384-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3132-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3384-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2268-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4232-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3384-62-0x0000000000400000-0x0000000000414000-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

Processes:

csrsll.exe711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.execmd.exereg.execsrsll.execsrsll.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe
Token: SeDebugPrivilege	4232	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.execsrsll.execsrsll.exe

pid	process
984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
3132	csrsll.exe
4232	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.execmd.execsrsll.exe

description	pid	process	target process
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 984 wrote to memory of 2268	984	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
PID 2268 wrote to memory of 4028	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	cmd.exe
PID 2268 wrote to memory of 4028	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	cmd.exe
PID 2268 wrote to memory of 4028	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	cmd.exe
PID 4028 wrote to memory of 1540	4028	cmd.exe	reg.exe
PID 4028 wrote to memory of 1540	4028	cmd.exe	reg.exe
PID 4028 wrote to memory of 1540	4028	cmd.exe	reg.exe
PID 2268 wrote to memory of 3132	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	csrsll.exe
PID 2268 wrote to memory of 3132	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	csrsll.exe
PID 2268 wrote to memory of 3132	2268	711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 4232	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe
PID 3132 wrote to memory of 3384	3132	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
"C:\Users\Admin\AppData\Local\Temp\711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:984
- C:\Users\Admin\AppData\Local\Temp\711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe
  "C:\Users\Admin\AppData\Local\Temp\711c824172649139a5b73b0638b6e93b283f09fb6f585bb3a30a58241a2df54c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2268
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RXOLP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4028
  - - 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:1540
- - 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:3132
  - - 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:4232
  - - 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:3384

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RXOLP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
19813ca224b4f8c9bbb8d2228d7395dd

SHA1
79770ffffc165a71c5df370845ce60c44c47b481

SHA256
8871d46c376baafdb34cc4f9835fa347edef3a4756749ddb7f0ab0de2b60fc6b

SHA512
a81ac4dda342a20989ee0857724dcb62983f0d9698321589e22f877558b8d9fe7600e06c83be91296e84ae613e0c1cbfb0982bd58a9502eb8691c2ec9371badb

Download Submit
memory/984-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/984-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/984-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/984-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/984-7-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/984-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/984-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2268-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2268-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3132-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3132-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3384-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3384-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4232-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads