modiloader | c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9

General

Target

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
Size

90KB
MD5

85d2952ee904971698cd6d3d3445e46f
SHA1

ed788c1ffac6da8a697fb7395f1e64aa6683f98f
SHA256

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9
SHA512

5cbde317a105c6b8c7f629c492da43d221407328b7f1ca6a2fa9cb5bbf090308f4bbbf52455f6d27a99ce18278079aad30302e8b129db4ad409aa3f738efa9fc
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDB:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3b

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/2620-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2620-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2620-62-0x0000000000400000-0x0000000000414000-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:

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

4416 csrsll.exe
1988 csrsll.exe
2620 csrsll.exe

pid	process
4416	csrsll.exe
1988	csrsll.exe
2620	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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.execsrsll.exe

description	pid	process	target process
PID 4328 set thread context of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4416 set thread context of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 set thread context of 2620	4416	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/4328-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4328-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3204-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3204-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4328-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3204-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/3204-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4416-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4416-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2620-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2620-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4416-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3204-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1988-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2620-62-0x0000000000400000-0x0000000000414000-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.execsrsll.exec1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exec1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.execmd.exereg.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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe
Token: SeDebugPrivilege	1988	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exec1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.execsrsll.execsrsll.exe

pid	process
4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
4416	csrsll.exe
1988	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exec1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.execmd.execsrsll.exe

description	pid	process	target process
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 4328 wrote to memory of 3204	4328	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
PID 3204 wrote to memory of 1320	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	cmd.exe
PID 3204 wrote to memory of 1320	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	cmd.exe
PID 3204 wrote to memory of 1320	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	cmd.exe
PID 1320 wrote to memory of 1668	1320	cmd.exe	reg.exe
PID 1320 wrote to memory of 1668	1320	cmd.exe	reg.exe
PID 1320 wrote to memory of 1668	1320	cmd.exe	reg.exe
PID 3204 wrote to memory of 4416	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	csrsll.exe
PID 3204 wrote to memory of 4416	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	csrsll.exe
PID 3204 wrote to memory of 4416	3204	c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 1988	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe
PID 4416 wrote to memory of 2620	4416	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
"C:\Users\Admin\AppData\Local\Temp\c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.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\c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe
  "C:\Users\Admin\AppData\Local\Temp\c1d1be2cd6bca0d24b9e10318912f071506e5fe7e0a03947cd09953e47fd80a9.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3204
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\SPOSF.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1320
  - - 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:1668
- - 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:4416
  - - 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:1988
  - - 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:2620

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
686c60bcbba06197e187be1dd7099bc9

SHA1
864f4ccb0255cc1c87230580782a11621d739f43

SHA256
7129d9c98b3c4e52788a291b5fb0864d603423fe40afe65e11dc725918b86d85

SHA512
7c179b6532287096edf51db07df5640a77c3821d0f08af2203cbcacfe06ab2210c80ff02fc772aa832a687ed0ccca46af44a4a62e1afda12355a71cf6c3f6cc5

Download Submit
memory/1988-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2620-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2620-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3204-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3204-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4328-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4328-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

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

Filesize
332KB

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

Filesize
332KB

Download
memory/4328-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/4328-4-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4416-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4416-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4416-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads