modiloader | a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd

Analysis

max time kernel
145s
max time network
142s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/04/2024, 15:57

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General

Target
Purchase order.exe
Size 1.6MB
Sample240403-tdxdrsfc71
SHA256 a108ae8bd69ac84bc8dd5fa7bdbb6eff9cd65a70c16567e0f36dae1f15d090fd
MD5 4e1e0180c5e140946d7970f64e644ac1
SHA1 e5f939a05d817a4b56ef7ec74788ad9ce3b8cb27
SHA512 f50883d44f5ccdccb9adf9cb6cc3f6c9d6947e9b0f85d7727af151424e54d1f041d3bb6238dd29f27c47ebed20ae7e74187d31b67fd285cc1aa7d28e66204954
SSDEEP 49152:ay6imwGhfj4GBT2z95Zw/L+gwnz1nwyuPTh:azimw4f8iSuD+g
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

modiloader remcos remotehost collection persistence rat spyware stealer trojan

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

127.0.0.1:44999
127.0.0.1:54991
africarem.duckdns.org:54991
africarem.duckdns.org:44999

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-R571U4
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

resource	yara_rule
behavioral1/memory/2156-2-0x0000000003400000-0x0000000004400000-memory.dmp	modiloader_stage2

NirSoft MailPassView 2 IoCs

Password recovery tool for various email clients

resource	yara_rule
behavioral1/memory/2268-105-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView
behavioral1/memory/2268-128-0x0000000000400000-0x0000000000462000-memory.dmp	MailPassView

NirSoft WebBrowserPassView 3 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/2024-102-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2024-103-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView
behavioral1/memory/2024-115-0x0000000000400000-0x0000000000478000-memory.dmp	WebBrowserPassView

Nirsoft 8 IoCs

resource	yara_rule
behavioral1/memory/2024-102-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2268-105-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft
behavioral1/memory/2024-103-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/1968-108-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1968-107-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/1968-110-0x0000000000400000-0x0000000000424000-memory.dmp	Nirsoft
behavioral1/memory/2024-115-0x0000000000400000-0x0000000000478000-memory.dmp	Nirsoft
behavioral1/memory/2268-128-0x0000000000400000-0x0000000000462000-memory.dmp	Nirsoft

Executes dropped EXE 2 IoCs

pid	Process
1868	8928291.exe
2748	8928291.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	Purchase order.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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows\CurrentVersion\Run\Hmzvinyr = "C:\\Users\\Public\\Hmzvinyr.url"	Purchase order.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2024	2156	Purchase order.exe	41
PID 2156 set thread context of 2268	2156	Purchase order.exe	42
PID 2156 set thread context of 1968	2156	Purchase order.exe	43

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.

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2024	Purchase order.exe
2024	Purchase order.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2156	Purchase order.exe
2156	Purchase order.exe
2156	Purchase order.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	Purchase order.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2432	2156	Purchase order.exe	28
PID 2156 wrote to memory of 2432	2156	Purchase order.exe	28
PID 2156 wrote to memory of 2432	2156	Purchase order.exe	28
PID 2156 wrote to memory of 2432	2156	Purchase order.exe	28
PID 2156 wrote to memory of 1016	2156	Purchase order.exe	29
PID 2156 wrote to memory of 1016	2156	Purchase order.exe	29
PID 2156 wrote to memory of 1016	2156	Purchase order.exe	29
PID 2156 wrote to memory of 1016	2156	Purchase order.exe	29
PID 2156 wrote to memory of 1656	2156	Purchase order.exe	32
PID 2156 wrote to memory of 1656	2156	Purchase order.exe	32
PID 2156 wrote to memory of 1656	2156	Purchase order.exe	32
PID 2156 wrote to memory of 1656	2156	Purchase order.exe	32
PID 2156 wrote to memory of 348	2156	Purchase order.exe	36
PID 2156 wrote to memory of 348	2156	Purchase order.exe	36
PID 2156 wrote to memory of 348	2156	Purchase order.exe	36
PID 2156 wrote to memory of 348	2156	Purchase order.exe	36
PID 2156 wrote to memory of 2024	2156	Purchase order.exe	41
PID 2156 wrote to memory of 2024	2156	Purchase order.exe	41
PID 2156 wrote to memory of 2024	2156	Purchase order.exe	41
PID 2156 wrote to memory of 2024	2156	Purchase order.exe	41
PID 2156 wrote to memory of 2268	2156	Purchase order.exe	42
PID 2156 wrote to memory of 2268	2156	Purchase order.exe	42
PID 2156 wrote to memory of 2268	2156	Purchase order.exe	42
PID 2156 wrote to memory of 2268	2156	Purchase order.exe	42
PID 2156 wrote to memory of 1968	2156	Purchase order.exe	43
PID 2156 wrote to memory of 1968	2156	Purchase order.exe	43
PID 2156 wrote to memory of 1968	2156	Purchase order.exe	43
PID 2156 wrote to memory of 1968	2156	Purchase order.exe	43

C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase order.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows "
  2⤵
  PID:2432
- C:\Windows\SysWOW64\cmd.exe
  cmd /c mkdir "\\?\C:\Windows \System32"
  2⤵
  PID:1016
- C:\Windows\SysWOW64\cmd.exe
  cmd /c "C:\Windows \System32\8928291.exe"
  2⤵
  PID:1656
- - C:\Windows \System32\8928291.exe
    "C:\Windows \System32\8928291.exe"
    3⤵
    - Executes dropped EXE
    PID:1868
- - C:\Windows \System32\8928291.exe
    "C:\Windows \System32\8928291.exe"
    3⤵
    - Executes dropped EXE
    PID:2748
- C:\Windows\SysWOW64\extrac32.exe
  C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\Purchase order.exe C:\\Users\\Public\\Libraries\\Hmzvinyr.PIF
  2⤵
  PID:348
- C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase order.exe" /stext "C:\Users\Admin\AppData\Local\Temp\qdmprwygwbdkvln"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2024
- C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase order.exe" /stext "C:\Users\Admin\AppData\Local\Temp\bfrispizkjvxxrbvuo"
  2⤵
  - Accesses Microsoft Outlook accounts
  PID:2268
- C:\Users\Admin\AppData\Local\Temp\Purchase order.exe
  "C:\Users\Admin\AppData\Local\Temp\Purchase order.exe" /stext "C:\Users\Admin\AppData\Local\Temp\daxtlhtbyrncifxzezejbg"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1968

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

94308059B57B3142E455B38A6EB92015

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
Size 68KB
SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
MD5 29f65ba8e88c063813cc50a4ea544e93
SHA1 05a7040d5c127e68c25d81cc51271ffb8bef3568
SHA512 e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa
SSDEEP 1536:iMveRG6BWC7T2g1wGUa5QUoaIB9ttiFJG+AOQOXl0Usvwr:feRG6BX6gUaHo9tkBHiUewr
MD5 SHA1 SHA512 SSDEEP

Submit Download

Tar53B3.tmp

Path C:\Users\Admin\AppData\Local\Temp\Tar53B3.tmp
Size 177KB
SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
MD5 435a9ac180383f9fa094131b173a2f7b
SHA1 76944ea657a9db94f9a4bef38f88c46ed4166983
SHA512 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a
SSDEEP 1536:fAo/J+lCUsTRvsqgCyqWlUDNWdm1wpSru2A0XwjY/z02DTr3rmt6mJ:f/J+qTR0XCy/dmASru2Aijbdq
MD5 SHA1 SHA512 SSDEEP

Submit Download

qdmprwygwbdkvln

Path C:\Users\Admin\AppData\Local\Temp\qdmprwygwbdkvln
Size 2B
SHA256 b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
MD5 f3b25701fe362ec84616a93a45ce9998
SHA1 d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA512 98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
MD5 SHA1 SHA512

Submit Download

8928291.exe

Path C:\Windows \System32\8928291.exe
Size 128KB
SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
MD5 231ce1e1d7d98b44371ffff407d68b59
SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612
SSDEEP 3072:zar2xXibKcf5K67+k02XbFbosspwUUgcR:Nibl7+k02XZb9UA
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1656-67-0x0000000000670000-0x0000000000671000-memory.dmp

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memory/1968-110-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1968-109-0x0000000000430000-0x00000000005B1000-memory.dmp

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memory/1968-107-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1968-108-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1968-106-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/1968-98-0x0000000000400000-0x0000000000424000-memory.dmp

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memory/2024-115-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2024-93-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2024-96-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2024-103-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2024-102-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/2156-85-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-118-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-89-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-88-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-87-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-86-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-145-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-0-0x0000000000220000-0x0000000000221000-memory.dmp

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memory/2156-84-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-81-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-144-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-80-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-140-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-79-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-4-0x0000000000400000-0x00000000005AF000-memory.dmp

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memory/2156-2-0x0000000003400000-0x0000000004400000-memory.dmp

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memory/2156-1-0x0000000003400000-0x0000000004400000-memory.dmp

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memory/2156-91-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-119-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-121-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-126-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-125-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-124-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-127-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-139-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-130-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-132-0x0000000033D30000-0x0000000033D49000-memory.dmp

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memory/2156-134-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2156-135-0x0000000015E30000-0x0000000016E30000-memory.dmp

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memory/2268-128-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2268-95-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2268-101-0x0000000000400000-0x0000000000462000-memory.dmp

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memory/2268-105-0x0000000000400000-0x0000000000462000-memory.dmp

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