hijackloader | f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad

Analysis

max time kernel
149s
max time network
132s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250217-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250217-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
18/02/2025, 13:59

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General

Target

d.msi
Size

2.9MB
MD5

ae5b94abf028388af1454ed76806cc6f
SHA1

ef013c7eec6fc6c14ccd414b5eb87abf1476566a
SHA256

f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad
SHA512

b88c3c160b68b0bdc03780a6848001aef7baa5532b815071eb4f26ff1caa87f71b2401b0c507db5389d14517310bae758aaa17f6fe7aa508f2de38cdbcac1fe2
SSDEEP

49152:TL51ahTWxFOlm43he+4Xkt1i1XkIZ9fm5urK7olHgnIxQQ6brit:p8h8ME4xr461ckZPoxgnsSa

Score

10^/10

hijackloader remcos v2 discovery loader persistence privilege_escalation rat

Malware Config

Extracted

Family

remcos

Botnet

185.157.162.126:1995

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
qsdazeazd-EL00KX
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
take_screenshot_option
false
take_screenshot_time
5

Signatures

Detects HijackLoader (aka IDAT Loader) 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000027dc8-31.dat	family_hijackloader

HijackLoader
HijackLoader is a multistage loader first seen in 2023.
loader hijackloader
Hijackloader family
hijackloader
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos

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-1-5-21-983685854-559653692-675906587-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\EHttpSrv = "\"C:\\Users\\Admin\\AppData\\Roaming\\IXXinstall\\EHttpSrv.exe\""	msiexec.exe

Enumerates connected drives 3 TTPs 46 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\D:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2044 set thread context of 2296	2044	EHttpSrv.exe	84
PID 2296 set thread context of 2800	2296	cmd.exe	88

Drops file in Windows directory 8 IoCs

description	ioc	Process
File created	C:\Windows\Installer\SourceHash{B1C5FCCC-2DDA-41F7-8B6A-192BB64891A0}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBF68.tmp	msiexec.exe
File created	C:\Windows\Installer\e57bdf3.msi	msiexec.exe
File created	C:\Windows\Installer\e57bdf1.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\e57bdf1.msi	msiexec.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	EHttpSrv.exe

Loads dropped DLL 3 IoCs

pid	Process
2044	EHttpSrv.exe
2044	EHttpSrv.exe
2800	EHttpSrv.exe

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

System Information Discovery
T1082

Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs

persistence privilege_escalation

Installer Packages

T1546.016

Msiexec

T1218.007

pid	Process
3516	msiexec.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	EHttpSrv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EHttpSrv.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
564	msiexec.exe
564	msiexec.exe
2044	EHttpSrv.exe
2296	cmd.exe
2296	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2044	EHttpSrv.exe
2296	cmd.exe
2296	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeShutdownPrivilege	3516	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3516	msiexec.exe
Token: SeSecurityPrivilege	564	msiexec.exe
Token: SeCreateTokenPrivilege	3516	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	3516	msiexec.exe
Token: SeLockMemoryPrivilege	3516	msiexec.exe
Token: SeIncreaseQuotaPrivilege	3516	msiexec.exe
Token: SeMachineAccountPrivilege	3516	msiexec.exe
Token: SeTcbPrivilege	3516	msiexec.exe
Token: SeSecurityPrivilege	3516	msiexec.exe
Token: SeTakeOwnershipPrivilege	3516	msiexec.exe
Token: SeLoadDriverPrivilege	3516	msiexec.exe
Token: SeSystemProfilePrivilege	3516	msiexec.exe
Token: SeSystemtimePrivilege	3516	msiexec.exe
Token: SeProfSingleProcessPrivilege	3516	msiexec.exe
Token: SeIncBasePriorityPrivilege	3516	msiexec.exe
Token: SeCreatePagefilePrivilege	3516	msiexec.exe
Token: SeCreatePermanentPrivilege	3516	msiexec.exe
Token: SeBackupPrivilege	3516	msiexec.exe
Token: SeRestorePrivilege	3516	msiexec.exe
Token: SeShutdownPrivilege	3516	msiexec.exe
Token: SeDebugPrivilege	3516	msiexec.exe
Token: SeAuditPrivilege	3516	msiexec.exe
Token: SeSystemEnvironmentPrivilege	3516	msiexec.exe
Token: SeChangeNotifyPrivilege	3516	msiexec.exe
Token: SeRemoteShutdownPrivilege	3516	msiexec.exe
Token: SeUndockPrivilege	3516	msiexec.exe
Token: SeSyncAgentPrivilege	3516	msiexec.exe
Token: SeEnableDelegationPrivilege	3516	msiexec.exe
Token: SeManageVolumePrivilege	3516	msiexec.exe
Token: SeImpersonatePrivilege	3516	msiexec.exe
Token: SeCreateGlobalPrivilege	3516	msiexec.exe
Token: SeBackupPrivilege	3688	vssvc.exe
Token: SeRestorePrivilege	3688	vssvc.exe
Token: SeAuditPrivilege	3688	vssvc.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe
Token: SeTakeOwnershipPrivilege	564	msiexec.exe
Token: SeRestorePrivilege	564	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3516	msiexec.exe
3516	msiexec.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 564 wrote to memory of 2044	564	msiexec.exe	83
PID 564 wrote to memory of 2044	564	msiexec.exe	83
PID 564 wrote to memory of 2044	564	msiexec.exe	83
PID 2044 wrote to memory of 2296	2044	EHttpSrv.exe	84
PID 2044 wrote to memory of 2296	2044	EHttpSrv.exe	84
PID 2044 wrote to memory of 2296	2044	EHttpSrv.exe	84
PID 2044 wrote to memory of 2296	2044	EHttpSrv.exe	84
PID 2296 wrote to memory of 2800	2296	cmd.exe	88
PID 2296 wrote to memory of 2800	2296	cmd.exe	88
PID 2296 wrote to memory of 2800	2296	cmd.exe	88
PID 2296 wrote to memory of 2800	2296	cmd.exe	88
PID 2296 wrote to memory of 2800	2296	cmd.exe	88

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\d.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:3516

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564
- C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
  "C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\SysWOW64\cmd.exe
    3⤵
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2296
  - - C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
      C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2800

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3688

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

Event Triggered Execution

T1546

Installer Packages

T1546.016

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Installer Packages

T1546.016

Defense Evasion

Modify Registry

T1112

System Binary Proxy Execution

T1218

Msiexec

T1218.007

Credential Access

Discovery

Peripheral Device Discovery

T1120

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:\Config.Msi\e57bdf2.rbs

Filesize
10KB

MD5
db2e1b3e134a131c2cf0765f0e97067c

SHA1
bc5517b169d48d194b766230fd4b5e1c57cade28

SHA256
72e31f78c370bae5e47cddb126733efe32c337e6a7bf017f442c73f94c6e01f1

SHA512
f4974893f83daba6f0357883535ef694b032ae3c518876a346ef4d9cd13f3aea20484c9b30a550e86bd51f4b0773940fb95f3875ce076815823c5c1784e38dcc

Download Submit
C:\Users\Admin\AppData\Local\Temp\5acdee32

Filesize
1.0MB

MD5
50fc8a480543ecb30cf897116daeb8d5

SHA1
d84a4d8762259e12279b94c5f35f04cf4e96ba54

SHA256
ff8a4e05a0049339a31187d21ea338cc9f173ce8ebb9af66f5621aea9fd6d591

SHA512
f73b27eecdb44b416c83d6ee378615f60ff4d4bc1169571b0496d2dd16adf7754f9278b426eef5fb85fd148b79974667d501f847797b994f6e0986b19f0815b5

Download Submit
C:\Users\Admin\AppData\Roaming\IXXinstall\EHttpSrv.exe

Filesize
20KB

MD5
9329ba45c8b97485926a171e34c2abb8

SHA1
20118bc0432b4e8b3660a4b038b20ca28f721e5c

SHA256
effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

SHA512
0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

Download Submit
C:\Users\Admin\AppData\Roaming\IXXinstall\MFC80U.DLL

Filesize
1.0MB

MD5
686b224b4987c22b153fbb545fee9657

SHA1
684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

SHA256
a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

SHA512
44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

Download Submit
C:\Users\Admin\AppData\Roaming\IXXinstall\audiogram.tif

Filesize
877KB

MD5
5124236fd955464317fbb1f344a1d2f2

SHA1
fe3a91e252f1dc3c3b4980ade7157369ea6f5097

SHA256
ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

SHA512
2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

Download Submit
C:\Users\Admin\AppData\Roaming\IXXinstall\http_dll.dll

Filesize
1.9MB

MD5
fe47e255c704b20cb20c8ed93ec94d47

SHA1
ed7d26624b3cfaa72cf7d3bc59d26845fb84247a

SHA256
b0d665cb466e10ef90e1d79a39cb655ebe785d0cefc074f7a22d04936b681879

SHA512
55813a4b755773f98991b47294fed03b23d5bee9af3ef98727b7345882fe0d9976546f46847fbc30119e7c62ce7ee8ae21f54065922041cf8d42364e607bc1c0

Download Submit
C:\Windows\Installer\e57bdf1.msi

Filesize
2.9MB

MD5
ae5b94abf028388af1454ed76806cc6f

SHA1
ef013c7eec6fc6c14ccd414b5eb87abf1476566a

SHA256
f286d2b89eaebb2e1e6e23a44bc92dae7c058348286810549f4c7514c9ea61ad

SHA512
b88c3c160b68b0bdc03780a6848001aef7baa5532b815071eb4f26ff1caa87f71b2401b0c507db5389d14517310bae758aaa17f6fe7aa508f2de38cdbcac1fe2

Download Submit
memory/2044-32-0x0000000074E40000-0x0000000074FBB000-memory.dmp

Filesize
1.5MB

Download
memory/2044-33-0x0000000074E40000-0x0000000074FBB000-memory.dmp

Filesize
1.5MB

Download
memory/2296-38-0x0000000074E40000-0x0000000074FBB000-memory.dmp

Filesize
1.5MB

Download
memory/2296-36-0x00007FFA79EF0000-0x00007FFA7A0E8000-memory.dmp

Filesize
2.0MB

Download
memory/2800-40-0x0000000073330000-0x0000000074583000-memory.dmp

Filesize
18.3MB

Download
memory/2800-42-0x00007FFA79EF0000-0x00007FFA7A0E8000-memory.dmp

Filesize
2.0MB

Download
memory/2800-43-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-46-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-47-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-50-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-51-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-52-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-53-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/2800-54-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download