modiloader | b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
12/06/2024, 03:17

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General

Target

b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
Size

326KB
MD5

8c1e120fb5b18346547d05a846718349
SHA1

ed4e308f5b908cad5886cfb4a37c75fa61ca88e8
SHA256

b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc
SHA512

eaaf85b019b52f1190ac2b0e6fd80c82cae1f09882bca35d8d44b50b321371f36075beef370c62b4aeffcfe27681bb9cc4f4a27ae7d771fb9ae36f86a033f6a7
SSDEEP

3072:ce2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:csxD5cwohO+O1sVG0/pZ6iPC8

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

resource	yara_rule
behavioral1/memory/2844-257-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 1 IoCs

resource	yara_rule
behavioral1/memory/2844-257-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 18 IoCs

resource	yara_rule
behavioral1/memory/1768-2-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/2292-91-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/1768-97-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/2292-105-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/2292-102-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/1768-101-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/2292-100-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/1768-99-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/2292-96-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/files/0x000d00000001226d-130.dat	UPX
behavioral1/memory/296-148-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/2292-145-0x0000000003260000-0x00000000032B4000-memory.dmp	UPX
behavioral1/memory/2844-245-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/2292-250-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/296-244-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/296-238-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral1/memory/924-256-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/2844-257-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

Executes dropped EXE 3 IoCs

pid	Process
296	csrsll.exe
924	csrsll.exe
2844	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1768-2-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2292-91-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2292-89-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1768-97-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2292-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2292-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1768-101-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2292-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1768-99-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2292-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x000d00000001226d-130.dat	upx
behavioral1/memory/296-148-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2292-145-0x0000000003260000-0x00000000032B4000-memory.dmp	upx
behavioral1/memory/2844-245-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2292-250-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/296-244-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/296-238-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/924-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2844-257-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-3691908287-3775019229-3534252667-1000\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 1768 set thread context of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 296 set thread context of 924	296	csrsll.exe	33
PID 296 set thread context of 2844	296	csrsll.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe
Token: SeDebugPrivilege	924	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
296	csrsll.exe
924	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 1768 wrote to memory of 2292	1768	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	28
PID 2292 wrote to memory of 1536	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	29
PID 2292 wrote to memory of 1536	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	29
PID 2292 wrote to memory of 1536	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	29
PID 2292 wrote to memory of 1536	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	29
PID 1536 wrote to memory of 2148	1536	cmd.exe	31
PID 1536 wrote to memory of 2148	1536	cmd.exe	31
PID 1536 wrote to memory of 2148	1536	cmd.exe	31
PID 1536 wrote to memory of 2148	1536	cmd.exe	31
PID 2292 wrote to memory of 296	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	32
PID 2292 wrote to memory of 296	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	32
PID 2292 wrote to memory of 296	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	32
PID 2292 wrote to memory of 296	2292	b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe	32
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 924	296	csrsll.exe	33
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34
PID 296 wrote to memory of 2844	296	csrsll.exe	34

C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
"C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe
  "C:\Users\Admin\AppData\Local\Temp\b800b3b0ba6b645aabaf1fce78017a5444539aaea5bb5dfcb492eb04cad40ebc.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2292
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\SRDLD.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1536
  - - 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
      PID:2148
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:296
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:924
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      PID:2844

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SRDLD.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
9996b118e3322e11e795d2d078cb70f9

SHA1
55d0fa2b74927dcc175e359a7bb7c0631cc35354

SHA256
56dbe97a3412a1e3a5aa10076b040058e4a059e11abd3a3881a686b85f7f5c72

SHA512
28aebbfdf362b2be0482cae729c4353746de75d735486fc8ba891baae6053f719b45aab957a2bea2aaeaa24965d057b0adbecd274d14b8dff33d421ee3d43398

Download Submit
memory/296-153-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/296-182-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/296-174-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/296-148-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/296-163-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/296-244-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/296-238-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/924-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1768-77-0x0000000000500000-0x0000000000502000-memory.dmp

Filesize
8KB

Download
memory/1768-39-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/1768-2-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1768-59-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/1768-97-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1768-69-0x00000000004E0000-0x00000000004E1000-memory.dmp

Filesize
4KB

Download
memory/1768-104-0x0000000002500000-0x0000000002554000-memory.dmp

Filesize
336KB

Download
memory/1768-93-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1768-101-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1768-27-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/1768-99-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1768-5-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/1768-15-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1768-3-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2292-94-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2292-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-146-0x0000000003260000-0x00000000032B4000-memory.dmp

Filesize
336KB

Download
memory/2292-145-0x0000000003260000-0x00000000032B4000-memory.dmp

Filesize
336KB

Download
memory/2292-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-147-0x0000000003260000-0x00000000032B4000-memory.dmp

Filesize
336KB

Download
memory/2292-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-250-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-87-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2292-89-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2844-245-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2844-257-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads