modiloader | fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3

General

Target

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
Size

308KB
MD5

4f495d696694e5d074125e7b95180f6c
SHA1

c390cd7665fc9eb63f751179598f324bb79dd32a
SHA256

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3
SHA512

d62e64723321c1af1ebb7bc327fc84578ddf59373204aa8ed22b91533a92b8de949196609137bc48432c4a9f217a3b12123ee72785384196846d0de271f4f252
SSDEEP

3072:/c3sBG7mXh7m/zZM3jAbNOM6CNtDCZFL:E3sBz0Z4Mj72F

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

Processes:

resource	yara_rule
behavioral1/memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 10 IoCs

Processes:

resource	yara_rule
behavioral1/memory/153596-73920-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/153596-73923-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/153596-73924-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/153596-73925-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/153596-111941-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/101488-147835-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral1/memory/101580-147834-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/153596-147845-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/101580-147850-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral1/memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp	UPX

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

62524 csrsll.exe
101580 csrsll.exe
101488 csrsll.exe

pid	process
62524	csrsll.exe
101580	csrsll.exe
101488	csrsll.exe

Loads dropped DLL 5 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe

pid	process
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe

UPX packed file 11 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/153596-73920-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-73918-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-73923-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-73924-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-73925-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-111941-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/101488-147835-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/101580-147834-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/153596-147845-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/101580-147850-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execsrsll.exe

description	pid	process	target process
PID 2364 set thread context of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 62524 set thread context of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 set thread context of 101488	62524	csrsll.exe	csrsll.exe

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

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe
Token: SeDebugPrivilege	101580	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exefc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execsrsll.execsrsll.exe

pid	process
2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
62524	csrsll.exe
101580	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exefc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.execmd.execsrsll.exe

description	pid	process	target process
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 2364 wrote to memory of 153596	2364	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
PID 153596 wrote to memory of 7156	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 153596 wrote to memory of 7156	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 153596 wrote to memory of 7156	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 153596 wrote to memory of 7156	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	cmd.exe
PID 7156 wrote to memory of 62480	7156	cmd.exe	reg.exe
PID 7156 wrote to memory of 62480	7156	cmd.exe	reg.exe
PID 7156 wrote to memory of 62480	7156	cmd.exe	reg.exe
PID 7156 wrote to memory of 62480	7156	cmd.exe	reg.exe
PID 153596 wrote to memory of 62524	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 153596 wrote to memory of 62524	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 153596 wrote to memory of 62524	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 153596 wrote to memory of 62524	153596	fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101580	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe
PID 62524 wrote to memory of 101488	62524	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2364

C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:153596

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\PLKXE.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:7156

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:62480

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:62524

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:101580

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:101488

Network

MITRE ATT&CK Matrix ATT&CK v13

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\PLKXE.bat
Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
Filesize
308KB

MD5
c27b5c626c70ddec4b8d49bfa1e9e867

SHA1
898182f0172a0223680c1a036401b62275d72eab

SHA256
a1d00a8d57dabbcee263695264a8c5f7b007c9c0ed9607a82e1d7d40e9924377

SHA512
dd8dd932bbf688a569c7ba1d2c366d225d4cb7581737434d3afa4a3c8e299fe9bea9890e5319fe60f0b55d0cb50ba40ee02cb90733d6dedc2b6505de5e4ca628

Download Submit
memory/2364-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2364-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/62524-73965-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/101488-147835-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/101580-147850-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/101580-147834-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73925-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73924-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73923-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-111941-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73922-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/153596-73916-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-147845-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73918-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/153596-73920-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads