modiloader | 67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518

General

Target

PROFORMA INVOICE.exe
Size

1.6MB
MD5

488f8d9de535475e4a901c033199ea0c
SHA1

3bda45e062fdc55823d9ceb71d0575df1e6ffd9e
SHA256

67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518
SHA512

58c0bb1af9b495f4c20a518d158f35a96d3f51dbb026b7fc40572a212dd7f05221f11efa995ef10199d32f970a308ea25407b77d307eeed06bd91b897ddbc4a4
SSDEEP

49152:ay6imwGhfj4GBT2z95Zw/L+gwnzBnwyuPTh:azimw4f8iSuD+g

Score

10^/10

modiloader remcos remotehost persistence rat trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:47212

officerem.duckdns.org:47212

Attributes

audio_folder
MicRecords
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-I8N3XG
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

ModiLoader Second Stage 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3028-2-0x0000000003110000-0x0000000004110000-memory.dmp	modiloader_stage2

Executes dropped EXE 2 IoCs

Processes:

5379270.exe5379270.exe

pid process

2508 5379270.exe
2448 5379270.exe

pid	process
2508	5379270.exe
2448	5379270.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

PROFORMA INVOICE.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\Uajcyryw = "C:\\Users\\Public\\Uajcyryw.url"	PROFORMA INVOICE.exe

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

System Information Discovery
T1082
Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 4 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PROFORMA INVOICE.exe

pid process

3028 PROFORMA INVOICE.exe

description	flow	ioc
HTTP User-Agent header	4	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
3028	PROFORMA INVOICE.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

PROFORMA INVOICE.exe

description	pid	process	target process
PID 3028 wrote to memory of 2732	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2732	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2732	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2732	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2236	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2236	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2236	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2236	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2444	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2444	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2444	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2444	3028	PROFORMA INVOICE.exe	cmd.exe
PID 3028 wrote to memory of 2932	3028	PROFORMA INVOICE.exe	extrac32.exe
PID 3028 wrote to memory of 2932	3028	PROFORMA INVOICE.exe	extrac32.exe
PID 3028 wrote to memory of 2932	3028	PROFORMA INVOICE.exe	extrac32.exe
PID 3028 wrote to memory of 2932	3028	PROFORMA INVOICE.exe	extrac32.exe

C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe
"C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3028

C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows "
2⤵
PID:2732

C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows \System32"
2⤵
PID:2236

C:\Windows\SysWOW64\cmd.exe
cmd /c "C:\Windows \System32\5379270.exe"
2⤵
PID:2444

C:\Windows \System32\5379270.exe
"C:\Windows \System32\5379270.exe"
3⤵
- Executes dropped EXE
PID:2508

C:\Windows \System32\5379270.exe
"C:\Windows \System32\5379270.exe"
3⤵
- Executes dropped EXE
PID:2448

C:\Windows\SysWOW64\extrac32.exe
C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\PROFORMA INVOICE.exe C:\\Users\\Public\\Libraries\\Uajcyryw.PIF
2⤵
PID:2932

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

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Downloads

C:\ProgramData\remcos\logs.dat
Filesize
144B

MD5
0c245b10bc91ac0e9b2fc14af7b25edd

SHA1
499e1cb3e8623d4d394546f8cb26829a80584c7b

SHA256
07962c86573f993512c236443d387891b7b6c4d252281ab7076f73ccfc0056ad

SHA512
692535d89534b4ed4819f06ed54293a2e66e5993c9c74759289c4c3057e27c59ccdb04f783242a34ad99d1d36002e6b6522f3d6bfb1548b1c4737eb721e18983

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Filesize
68KB

MD5
29f65ba8e88c063813cc50a4ea544e93

SHA1
05a7040d5c127e68c25d81cc51271ffb8bef3568

SHA256
1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

SHA512
e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar4E46.tmp
Filesize
177KB

MD5
435a9ac180383f9fa094131b173a2f7b

SHA1
76944ea657a9db94f9a4bef38f88c46ed4166983

SHA256
67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

SHA512
1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

Download Submit
C:\Windows \System32\5379270.exe
Filesize
128KB

MD5
231ce1e1d7d98b44371ffff407d68b59

SHA1
25510d0f6353dbf0c9f72fc880de7585e34b28ff

SHA256
30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96

SHA512
520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

Download Submit
memory/2444-67-0x0000000000630000-0x0000000000631000-memory.dmp

Filesize
4KB

Download
memory/3028-84-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-88-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-4-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/3028-2-0x0000000003110000-0x0000000004110000-memory.dmp

Filesize
16.0MB

Download
memory/3028-80-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-82-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-83-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/3028-85-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-86-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-87-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-5-0x0000000000400000-0x00000000005AF000-memory.dmp

Filesize
1.7MB

Download
memory/3028-92-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-98-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-99-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-1-0x0000000003110000-0x0000000004110000-memory.dmp

Filesize
16.0MB

Download
memory/3028-109-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-110-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-119-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-120-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-130-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download
memory/3028-131-0x0000000015B90000-0x0000000016B90000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads