hijackloader | 4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3

Analysis

max time kernel
149s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2025 11:01

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General

Target

5d8dc4f7c58f4681dee4ee9f6ecc3498.msi
Size

3.0MB
MD5

5d8dc4f7c58f4681dee4ee9f6ecc3498
SHA1

3eb23e362ecba770d842e99dd6bf386f1b6c0b47
SHA256

4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3
SHA512

765fa345c0fb369795e54e0506b6a8caebbffce1c7cbdf061520d9ece9a15b840fec967de692314e42b30ef29df1612dc12e70f19b1b87d6cbabc473b4f9558e
SSDEEP

49152:1W7g8r6F5mCmR+ZuBRQPcM6rUa1eH8CvQbFpsPNAbJU2DKcDahV3dZj:Zo6Au/6rUorpjbJTOcWTdZ

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
behavioral2/files/0x0007000000023c86-44.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

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2500 set thread context of 4352	2500	EHttpSrv.exe	90
PID 4352 set thread context of 3584	4352	cmd.exe	93

Drops file in Windows directory 11 IoCs

description	ioc	Process
File created	C:\Windows\Installer\e57bd45.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\MSIBD93.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBECD.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBF1C.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File created	C:\Windows\Installer\SourceHash{22A1B846-663B-4818-9F81-5998C4D634C7}	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC008.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\e57bd45.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIBF6B.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
2500	EHttpSrv.exe

Loads dropped DLL 7 IoCs

pid	Process
5032	MsiExec.exe
5032	MsiExec.exe
5032	MsiExec.exe
5032	MsiExec.exe
2500	EHttpSrv.exe
2500	EHttpSrv.exe
3584	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
4888	msiexec.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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	MsiExec.exe
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
5000	msiexec.exe
5000	msiexec.exe
2500	EHttpSrv.exe
4352	cmd.exe
4352	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2500	EHttpSrv.exe
4352	cmd.exe
4352	cmd.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4888	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4888	msiexec.exe
Token: SeSecurityPrivilege	5000	msiexec.exe
Token: SeCreateTokenPrivilege	4888	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4888	msiexec.exe
Token: SeLockMemoryPrivilege	4888	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4888	msiexec.exe
Token: SeMachineAccountPrivilege	4888	msiexec.exe
Token: SeTcbPrivilege	4888	msiexec.exe
Token: SeSecurityPrivilege	4888	msiexec.exe
Token: SeTakeOwnershipPrivilege	4888	msiexec.exe
Token: SeLoadDriverPrivilege	4888	msiexec.exe
Token: SeSystemProfilePrivilege	4888	msiexec.exe
Token: SeSystemtimePrivilege	4888	msiexec.exe
Token: SeProfSingleProcessPrivilege	4888	msiexec.exe
Token: SeIncBasePriorityPrivilege	4888	msiexec.exe
Token: SeCreatePagefilePrivilege	4888	msiexec.exe
Token: SeCreatePermanentPrivilege	4888	msiexec.exe
Token: SeBackupPrivilege	4888	msiexec.exe
Token: SeRestorePrivilege	4888	msiexec.exe
Token: SeShutdownPrivilege	4888	msiexec.exe
Token: SeDebugPrivilege	4888	msiexec.exe
Token: SeAuditPrivilege	4888	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4888	msiexec.exe
Token: SeChangeNotifyPrivilege	4888	msiexec.exe
Token: SeRemoteShutdownPrivilege	4888	msiexec.exe
Token: SeUndockPrivilege	4888	msiexec.exe
Token: SeSyncAgentPrivilege	4888	msiexec.exe
Token: SeEnableDelegationPrivilege	4888	msiexec.exe
Token: SeManageVolumePrivilege	4888	msiexec.exe
Token: SeImpersonatePrivilege	4888	msiexec.exe
Token: SeCreateGlobalPrivilege	4888	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe
Token: SeRestorePrivilege	5000	msiexec.exe
Token: SeTakeOwnershipPrivilege	5000	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4888	msiexec.exe
4888	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 5000 wrote to memory of 5032	5000	msiexec.exe	86
PID 5000 wrote to memory of 5032	5000	msiexec.exe	86
PID 5000 wrote to memory of 5032	5000	msiexec.exe	86
PID 5000 wrote to memory of 2500	5000	msiexec.exe	89
PID 5000 wrote to memory of 2500	5000	msiexec.exe	89
PID 5000 wrote to memory of 2500	5000	msiexec.exe	89
PID 2500 wrote to memory of 4352	2500	EHttpSrv.exe	90
PID 2500 wrote to memory of 4352	2500	EHttpSrv.exe	90
PID 2500 wrote to memory of 4352	2500	EHttpSrv.exe	90
PID 2500 wrote to memory of 4352	2500	EHttpSrv.exe	90
PID 4352 wrote to memory of 3584	4352	cmd.exe	93
PID 4352 wrote to memory of 3584	4352	cmd.exe	93
PID 4352 wrote to memory of 3584	4352	cmd.exe	93
PID 4352 wrote to memory of 3584	4352	cmd.exe	93
PID 4352 wrote to memory of 3584	4352	cmd.exe	93

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\5d8dc4f7c58f4681dee4ee9f6ecc3498.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4888

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5000
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 1945FCDD10D31521FC75A9AB7AA69043
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:5032
- C:\Users\Admin\AppData\Local\EHttpSrv.exe
  "C:\Users\Admin\AppData\Local\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:2500
- - 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:4352
  - - C:\Users\Admin\AppData\Local\EHttpSrv.exe
      C:\Users\Admin\AppData\Local\EHttpSrv.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:3584

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Installer Packages

T1546.016

Privilege Escalation

Event Triggered Execution

T1546

Installer Packages

T1546.016

Defense Evasion

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

Replay Monitor

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Downloads

C:\Config.Msi\e57bd48.rbs

Filesize
2KB

MD5
44335da4c6ced8e8e01bb1234a2f98ce

SHA1
edd5db57d5bc20ba3c7dd10bef47f513dbf0d5b9

SHA256
b9df21e4ac36e2b0b12087c140e64a785addc5fb56a7a53c0b56b09fd316761e

SHA512
a766d4684cdca5ead2547f09177f511042a64f390a606da69766b9dfa64ad6d82dd3374ef198834d7f80f2efb8fca60570a9017c6f94e13ba38991eb30f89cf6

Download Submit
C:\Users\Admin\AppData\Local\EHttpSrv.exe

Filesize
20KB

MD5
9329ba45c8b97485926a171e34c2abb8

SHA1
20118bc0432b4e8b3660a4b038b20ca28f721e5c

SHA256
effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

SHA512
0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

Download Submit
C:\Users\Admin\AppData\Local\MFC80U.DLL

Filesize
1.0MB

MD5
686b224b4987c22b153fbb545fee9657

SHA1
684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

SHA256
a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

SHA512
44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

Download Submit
C:\Users\Admin\AppData\Local\Temp\59f1da32

Filesize
1.0MB

MD5
ff2a8f790d65f7273b13128b811bfe70

SHA1
293ce905115a29377e3bb8bc009ad1c4ee1a0d96

SHA256
c318b4ddb53477b7b6d68d5f907aedbc55f570a0e75472037606955bde076ae4

SHA512
0f688743d3776c554ad26c75043f17f061ecf976d24b3851701fd10b6755001df9ab563b37b81464e8f24d500d2a4552a399e01c793fe0705bfeeeb1d5d0be51

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI7bbed.LOG

Filesize
20KB

MD5
99edb5a746358cd7e73f64cfee187912

SHA1
3037a6f5bdb964dac92738f33882d6a6a435d440

SHA256
f513920b049fc117710126c316bca9bee8979a609b5b2e3060c6889b7767e29c

SHA512
4309d185aacbc673eaa5eb520472f7753f9637cd3b5a2f6b494d1ed95c96884d06ae25cce2e3859394ac6e9ecb315e4f37ec419d8268f5bd3e6674377aa544e5

Download Submit
C:\Users\Admin\AppData\Local\audiogram.tif

Filesize
877KB

MD5
5124236fd955464317fbb1f344a1d2f2

SHA1
fe3a91e252f1dc3c3b4980ade7157369ea6f5097

SHA256
ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

SHA512
2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

Download Submit
C:\Users\Admin\AppData\Local\http_dll.dll

Filesize
883KB

MD5
4366cd6c5d795811822b9ccc3df3eab4

SHA1
30f6050729b4c08b7657454cb79dd5a3d463c606

SHA256
55497a3eced5d8d190400bcd1a4b43a304ebf74a0d6d098665474ed4b1b0e9da

SHA512
4a56a2da7ded16125c2795d5760c7c08a93362536c9212cff3a31dbf6613cb3fca436efd77c256338f5134da955bc7ccc564b4af0c45ac0dfd645460b922a349

Download Submit
C:\Windows\Installer\MSIBD93.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/2500-45-0x00000000741E0000-0x000000007435B000-memory.dmp

Filesize
1.5MB

Download
memory/2500-51-0x00000000741E0000-0x000000007435B000-memory.dmp

Filesize
1.5MB

Download
memory/3584-64-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-58-0x0000000072F80000-0x00000000741D4000-memory.dmp

Filesize
18.3MB

Download
memory/3584-60-0x00007FF990C90000-0x00007FF990E85000-memory.dmp

Filesize
2.0MB

Download
memory/3584-61-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-65-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-67-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-68-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-69-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-73-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-74-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/3584-75-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4352-56-0x00000000741E0000-0x000000007435B000-memory.dmp

Filesize
1.5MB

Download
memory/4352-54-0x00007FF990C90000-0x00007FF990E85000-memory.dmp

Filesize
2.0MB

Download