hijackloader | e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37

General

Target

e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37.msi
Size

3.0MB
MD5

da2c2debc2177026f359f4f06db67ea2
SHA1

c9b0cb497058b925ecb430d0e29d16fd0ca273a4
SHA256

e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37
SHA512

9885d2dbec4e3599862fc76c56773de56944adfa09322b7c401550dcfbaa49e95bdf27daf1515873fdc9a4c56ad6ab8195e6b9556afc8e3488401174a5203f5d
SSDEEP

49152:Ch4L8r6F5mCmR+XuhqZL+H9IyKficUAG595WpZsNAaudSIu:Fo6NZLSIX6cZGZWUNAaud

Score

10^/10

hijackloader remcos v2 discovery loader persistence privilege_escalation rat

Malware Config

Extracted

Family

remcos

Botnet

v2

C2

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\audiogram.tif	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

Processes:

msiexec.exemsiexec.exe

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

EHttpSrv.execmd.exe

description	pid	process	target process
PID 2268 set thread context of 3024	2268	EHttpSrv.exe	cmd.exe
PID 3024 set thread context of 2844	3024	cmd.exe	EHttpSrv.exe

Drops file in Windows directory 9 IoCs

Processes:

msiexec.exe

description	ioc	process
File opened for modification	C:\Windows\Installer\MSIC1BA.tmp	msiexec.exe
File created	C:\Windows\Installer\f76c0c3.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\f76c0c0.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC0FE.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC46B.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\f76c0c3.ipi	msiexec.exe
File created	C:\Windows\Installer\f76c0c0.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIC257.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

Processes:

EHttpSrv.exe

pid process

2268 EHttpSrv.exe
Loads dropped DLL 9 IoCs

Processes:

MsiExec.exeEHttpSrv.execmd.exeEHttpSrv.exe

pid process

988 MsiExec.exe
988 MsiExec.exe
988 MsiExec.exe
2268 EHttpSrv.exe
2268 EHttpSrv.exe
3024 cmd.exe
3024 cmd.exe
3024 cmd.exe
2844 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

Processes:

msiexec.exe

pid process

2384 msiexec.exe

pid	process
2268	EHttpSrv.exe

pid	process
988	MsiExec.exe
988	MsiExec.exe
988	MsiExec.exe
2268	EHttpSrv.exe
2268	EHttpSrv.exe
3024	cmd.exe
3024	cmd.exe
3024	cmd.exe
2844	EHttpSrv.exe

pid	process
2384	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

Processes:

MsiExec.exeEHttpSrv.execmd.exeEHttpSrv.exe

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

Processes:

msiexec.exeEHttpSrv.execmd.exe

pid process

2160 msiexec.exe
2160 msiexec.exe
2268 EHttpSrv.exe
3024 cmd.exe
3024 cmd.exe
Suspicious behavior: MapViewOfSection 3 IoCs

Processes:

EHttpSrv.execmd.exe

pid process

2268 EHttpSrv.exe
3024 cmd.exe
3024 cmd.exe

pid	process
2160	msiexec.exe
2160	msiexec.exe
2268	EHttpSrv.exe
3024	cmd.exe
3024	cmd.exe

pid	process
2268	EHttpSrv.exe
3024	cmd.exe
3024	cmd.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

Processes:

msiexec.exemsiexec.exe

description	pid	process
Token: SeShutdownPrivilege	2384	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2384	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeSecurityPrivilege	2160	msiexec.exe
Token: SeCreateTokenPrivilege	2384	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	2384	msiexec.exe
Token: SeLockMemoryPrivilege	2384	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2384	msiexec.exe
Token: SeMachineAccountPrivilege	2384	msiexec.exe
Token: SeTcbPrivilege	2384	msiexec.exe
Token: SeSecurityPrivilege	2384	msiexec.exe
Token: SeTakeOwnershipPrivilege	2384	msiexec.exe
Token: SeLoadDriverPrivilege	2384	msiexec.exe
Token: SeSystemProfilePrivilege	2384	msiexec.exe
Token: SeSystemtimePrivilege	2384	msiexec.exe
Token: SeProfSingleProcessPrivilege	2384	msiexec.exe
Token: SeIncBasePriorityPrivilege	2384	msiexec.exe
Token: SeCreatePagefilePrivilege	2384	msiexec.exe
Token: SeCreatePermanentPrivilege	2384	msiexec.exe
Token: SeBackupPrivilege	2384	msiexec.exe
Token: SeRestorePrivilege	2384	msiexec.exe
Token: SeShutdownPrivilege	2384	msiexec.exe
Token: SeDebugPrivilege	2384	msiexec.exe
Token: SeAuditPrivilege	2384	msiexec.exe
Token: SeSystemEnvironmentPrivilege	2384	msiexec.exe
Token: SeChangeNotifyPrivilege	2384	msiexec.exe
Token: SeRemoteShutdownPrivilege	2384	msiexec.exe
Token: SeUndockPrivilege	2384	msiexec.exe
Token: SeSyncAgentPrivilege	2384	msiexec.exe
Token: SeEnableDelegationPrivilege	2384	msiexec.exe
Token: SeManageVolumePrivilege	2384	msiexec.exe
Token: SeImpersonatePrivilege	2384	msiexec.exe
Token: SeCreateGlobalPrivilege	2384	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe
Token: SeRestorePrivilege	2160	msiexec.exe
Token: SeTakeOwnershipPrivilege	2160	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

msiexec.exe

pid process

2384 msiexec.exe
2384 msiexec.exe

pid	process
2384	msiexec.exe
2384	msiexec.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

msiexec.exeEHttpSrv.execmd.exe

description	pid	process	target process
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 988	2160	msiexec.exe	MsiExec.exe
PID 2160 wrote to memory of 2268	2160	msiexec.exe	EHttpSrv.exe
PID 2160 wrote to memory of 2268	2160	msiexec.exe	EHttpSrv.exe
PID 2160 wrote to memory of 2268	2160	msiexec.exe	EHttpSrv.exe
PID 2160 wrote to memory of 2268	2160	msiexec.exe	EHttpSrv.exe
PID 2268 wrote to memory of 3024	2268	EHttpSrv.exe	cmd.exe
PID 2268 wrote to memory of 3024	2268	EHttpSrv.exe	cmd.exe
PID 2268 wrote to memory of 3024	2268	EHttpSrv.exe	cmd.exe
PID 2268 wrote to memory of 3024	2268	EHttpSrv.exe	cmd.exe
PID 2268 wrote to memory of 3024	2268	EHttpSrv.exe	cmd.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe
PID 3024 wrote to memory of 2844	3024	cmd.exe	EHttpSrv.exe

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2384

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:2160
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding A3DFC4D0B7AA490E474D1BA8CE817DA0
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:988
- C:\Users\Admin\AppData\Local\Temp\EHttpSrv.exe
  "C:\Users\Admin\AppData\Local\Temp\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:2268
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\SysWOW64\cmd.exe
    3⤵
    - Suspicious use of SetThreadContext
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:3024
  - - C:\Users\Admin\AppData\Local\Temp\EHttpSrv.exe
      C:\Users\Admin\AppData\Local\Temp\EHttpSrv.exe
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:2844

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

Installer Packages

1

T1546.016

Privilege Escalation

Event Triggered Execution

1

T1546

Installer Packages

1

T1546.016

Defense Evasion

System Binary Proxy Execution

1

T1218

Msiexec

1

T1218.007

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Config.Msi\f76c0c4.rbs

Filesize
2KB

MD5
b6d2227c44dcf42d5350cb9fca813f52

SHA1
d1755e64a2b192d6a665112ceceb8a1c97ee5816

SHA256
5e92427f22cfa8407af40f9dfa50c9eb0e1540098ed5fbd0b981d6068720c58f

SHA512
119686066f9088f07f2ae7916884ef60a2e965c9c13d44bbf9d77757d54455e383c2920fdfe273d799469055751a6bfa62f4fc28e061911d40ecf741642e8c90

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

Filesize
20KB

MD5
9329ba45c8b97485926a171e34c2abb8

SHA1
20118bc0432b4e8b3660a4b038b20ca28f721e5c

SHA256
effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

SHA512
0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

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

Filesize
1.0MB

MD5
686b224b4987c22b153fbb545fee9657

SHA1
684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

SHA256
a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

SHA512
44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI6bf97.LOG

Filesize
21KB

MD5
27254e17ea8e08f2e1472c2160790593

SHA1
7e44b8ce25743e303d9518c768deff6da27497db

SHA256
923fecb2aab53b04b7cd18e15d9a2ad80f27928bcfe9d8176022285f207c3214

SHA512
a5c72cbc79e4f7aeb787a1ff257e399cf7bca34399edbb77db273c3cc583be98fd6a08c099293bfa17d444b67703e2abf1d24f2dd68cdfde18a179fd33baeac8

Download Submit
C:\Users\Admin\AppData\Local\Temp\ae650022

Filesize
1.0MB

MD5
c5e0150b069611701dd7c81328623064

SHA1
7e7be9488b0b7e78f70ad6ca3a506a89e9b09bc0

SHA256
e2cd948fa16ddf50ed37da3a2facea12159d95fa47ee0d3b2ae237b84d443cfd

SHA512
c5db40fa288cfd68cd88c8106782dbb5215b4fa38c83bbcf8c15a3419a4d7ac1a28110d42a1a175db6e91cbab30692022885eb14997cca78c4292c117777f34f

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

Filesize
877KB

MD5
5124236fd955464317fbb1f344a1d2f2

SHA1
fe3a91e252f1dc3c3b4980ade7157369ea6f5097

SHA256
ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

SHA512
2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

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

Filesize
883KB

MD5
4366cd6c5d795811822b9ccc3df3eab4

SHA1
30f6050729b4c08b7657454cb79dd5a3d463c606

SHA256
55497a3eced5d8d190400bcd1a4b43a304ebf74a0d6d098665474ed4b1b0e9da

SHA512
4a56a2da7ded16125c2795d5760c7c08a93362536c9212cff3a31dbf6613cb3fca436efd77c256338f5134da955bc7ccc564b4af0c45ac0dfd645460b922a349

Download Submit
\Windows\Installer\MSIC0FE.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/2268-42-0x0000000073CF0000-0x0000000073E64000-memory.dmp

Filesize
1.5MB

Download
memory/2268-48-0x0000000073CF0000-0x0000000073E64000-memory.dmp

Filesize
1.5MB

Download
memory/2844-102-0x00000000725A0000-0x0000000073602000-memory.dmp

Filesize
16.4MB

Download
memory/2844-112-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-120-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-104-0x0000000077020000-0x00000000771C9000-memory.dmp

Filesize
1.7MB

Download
memory/2844-105-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-109-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-110-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-119-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-113-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-114-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-115-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-116-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-117-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2844-118-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/3024-98-0x0000000073CF0000-0x0000000073E64000-memory.dmp

Filesize
1.5MB

Download
memory/3024-51-0x0000000077020000-0x00000000771C9000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads