modiloader | 1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a

Analysis

max time kernel
119s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 07:53

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General

Target

1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
Size

90KB
MD5

611d0fdf6bba56300d42f203b50c56b7
SHA1

53d4a47e4be9e768d154104a36c62782c9603091
SHA256

1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a
SHA512

c3920c513123404a92d00186f586499185a32c8755d843f718434fcf89af60f5603f001249565863da5fca2375ca71a057b9404a7b3598aad3a4b8409e42ae4d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDg:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3m

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/4700-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4700-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4700-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4700-63-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe

Executes dropped EXE 3 IoCs

pid	Process
2416	csrsll.exe
3360	csrsll.exe
4700	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-1-5-21-2437139445-1151884604-3026847218-1000\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 1612 set thread context of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 2416 set thread context of 3360	2416	csrsll.exe	97
PID 2416 set thread context of 4700	2416	csrsll.exe	98

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1612-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1612-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3236-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3236-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1612-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3236-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023ca5-29.dat	upx
behavioral2/memory/3236-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2416-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2416-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4700-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4700-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4700-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4700-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4700-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2416-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3236-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3360-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4700-63-0x0000000000400000-0x0000000000414000-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	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	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe
Token: SeDebugPrivilege	3360	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
2416	csrsll.exe
3360	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 1612 wrote to memory of 3236	1612	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	83
PID 3236 wrote to memory of 4312	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	84
PID 3236 wrote to memory of 4312	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	84
PID 3236 wrote to memory of 4312	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	84
PID 4312 wrote to memory of 4892	4312	cmd.exe	88
PID 4312 wrote to memory of 4892	4312	cmd.exe	88
PID 4312 wrote to memory of 4892	4312	cmd.exe	88
PID 3236 wrote to memory of 2416	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	89
PID 3236 wrote to memory of 2416	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	89
PID 3236 wrote to memory of 2416	3236	1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe	89
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 3360	2416	csrsll.exe	97
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98
PID 2416 wrote to memory of 4700	2416	csrsll.exe	98

C:\Users\Admin\AppData\Local\Temp\1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
"C:\Users\Admin\AppData\Local\Temp\1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1612
- C:\Users\Admin\AppData\Local\Temp\1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe
  "C:\Users\Admin\AppData\Local\Temp\1bfbbd19d2f8867edb212775de36a27c3da84b64d3e30786a20162abbf11990a.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3236
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UMIDT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4312
  - - 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:4892
- - 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:2416
  - - 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:3360
  - - 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:4700

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\UMIDT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
d75f64d287158637c6a3458394d8f19e

SHA1
03c05f95c9673095b58f28fb04b029e78918e64a

SHA256
7a21f456e1ebd897849a124ed783ee7e6d6155ad1d426624b92ed8cdd90372a6

SHA512
ba4ec76c414477452170f039e6e14fc20b02477cec59aac6926c1f2e054f9466ad8093d1891aee15cc40ef458b962f9dd7d4e74330ef8adb0c7235c259485f3a

Download Submit
memory/1612-3-0x00000000021C0000-0x00000000021C2000-memory.dmp

Filesize
8KB

Download
memory/1612-4-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/1612-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1612-6-0x00000000021F0000-0x00000000021F2000-memory.dmp

Filesize
8KB

Download
memory/1612-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1612-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2416-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2416-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2416-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3236-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3236-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3236-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3236-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3236-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3360-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4700-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4700-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4700-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4700-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4700-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4700-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads