hijackloader | e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37

Analysis

max time kernel
149s
max time network
146s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 09:53

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General

Target

Slf.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

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/0x00050000000193a5-46.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)	\??\T:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\G:	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)	\??\L:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\I:	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)	\??\B:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2808 set thread context of 2528	2808	EHttpSrv.exe	34
PID 2528 set thread context of 848	2528	cmd.exe	36

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSIF354.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF7E9.tmp	msiexec.exe
File created	C:\Windows\Installer\f76f2f6.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\f76f2f6.msi	msiexec.exe
File created	C:\Windows\Installer\f76f2f9.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\f76f2f9.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF47D.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSIF4EC.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
2808	EHttpSrv.exe

Loads dropped DLL 9 IoCs

pid	Process
1940	MsiExec.exe
1940	MsiExec.exe
1940	MsiExec.exe
2808	EHttpSrv.exe
2808	EHttpSrv.exe
2528	cmd.exe
2528	cmd.exe
2528	cmd.exe
848	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
2460	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
588	msiexec.exe
588	msiexec.exe
2808	EHttpSrv.exe
2528	cmd.exe
2528	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2808	EHttpSrv.exe
2528	cmd.exe
2528	cmd.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2460	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2460	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeSecurityPrivilege	588	msiexec.exe
Token: SeCreateTokenPrivilege	2460	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	2460	msiexec.exe
Token: SeLockMemoryPrivilege	2460	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2460	msiexec.exe
Token: SeMachineAccountPrivilege	2460	msiexec.exe
Token: SeTcbPrivilege	2460	msiexec.exe
Token: SeSecurityPrivilege	2460	msiexec.exe
Token: SeTakeOwnershipPrivilege	2460	msiexec.exe
Token: SeLoadDriverPrivilege	2460	msiexec.exe
Token: SeSystemProfilePrivilege	2460	msiexec.exe
Token: SeSystemtimePrivilege	2460	msiexec.exe
Token: SeProfSingleProcessPrivilege	2460	msiexec.exe
Token: SeIncBasePriorityPrivilege	2460	msiexec.exe
Token: SeCreatePagefilePrivilege	2460	msiexec.exe
Token: SeCreatePermanentPrivilege	2460	msiexec.exe
Token: SeBackupPrivilege	2460	msiexec.exe
Token: SeRestorePrivilege	2460	msiexec.exe
Token: SeShutdownPrivilege	2460	msiexec.exe
Token: SeDebugPrivilege	2460	msiexec.exe
Token: SeAuditPrivilege	2460	msiexec.exe
Token: SeSystemEnvironmentPrivilege	2460	msiexec.exe
Token: SeChangeNotifyPrivilege	2460	msiexec.exe
Token: SeRemoteShutdownPrivilege	2460	msiexec.exe
Token: SeUndockPrivilege	2460	msiexec.exe
Token: SeSyncAgentPrivilege	2460	msiexec.exe
Token: SeEnableDelegationPrivilege	2460	msiexec.exe
Token: SeManageVolumePrivilege	2460	msiexec.exe
Token: SeImpersonatePrivilege	2460	msiexec.exe
Token: SeCreateGlobalPrivilege	2460	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe
Token: SeRestorePrivilege	588	msiexec.exe
Token: SeTakeOwnershipPrivilege	588	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2460	msiexec.exe
2460	msiexec.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 1940	588	msiexec.exe	32
PID 588 wrote to memory of 2808	588	msiexec.exe	33
PID 588 wrote to memory of 2808	588	msiexec.exe	33
PID 588 wrote to memory of 2808	588	msiexec.exe	33
PID 588 wrote to memory of 2808	588	msiexec.exe	33
PID 2808 wrote to memory of 2528	2808	EHttpSrv.exe	34
PID 2808 wrote to memory of 2528	2808	EHttpSrv.exe	34
PID 2808 wrote to memory of 2528	2808	EHttpSrv.exe	34
PID 2808 wrote to memory of 2528	2808	EHttpSrv.exe	34
PID 2808 wrote to memory of 2528	2808	EHttpSrv.exe	34
PID 2528 wrote to memory of 848	2528	cmd.exe	36
PID 2528 wrote to memory of 848	2528	cmd.exe	36
PID 2528 wrote to memory of 848	2528	cmd.exe	36
PID 2528 wrote to memory of 848	2528	cmd.exe	36
PID 2528 wrote to memory of 848	2528	cmd.exe	36
PID 2528 wrote to memory of 848	2528	cmd.exe	36

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\Slf.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2460

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:588
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding F8B2C0D4A0C05E912E8E5487593C1BA7
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1940
- 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:2808
- - 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:2528
  - - 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:848

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\f76f2fa.rbs

Filesize
2KB

MD5
66a986ce4ecbc2e2595cf18d3edf7bf4

SHA1
4d22c06d9d82f8f802b816b08f46fc890737928e

SHA256
1c5f19213d9abc69165ac8ce9e58ee52c2075f6fe7f3f9945128ec4913b2bc58

SHA512
9fc05a0a7fda8c44bd21e3b3e558f55fc9fc7430eedb6b4563bd1a83f4fb675e76d2fbcde52c06b54a70e4c98e3efc5afe4ca748619ac7bd6ce4f37c5780fd9b

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\MSI6f1ed.LOG

Filesize
19KB

MD5
876556d103f8ffa069c0c161b6305c9e

SHA1
c623e81343bfbe5f2be178b68076671c17ad011e

SHA256
44529a2a517051c5a205b45992c19cfd7b888fbfef9dfc4ffc983359aa53c40c

SHA512
c5e437c5f5bcfaf5440b9995b72cc3992b5ee5037a176d1bf803924f48132ca9f3d7515c8f01c378b73167693f423bb1c86e23027cc01df43b94c548682a3c4b

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\f8d650bc

Filesize
1.0MB

MD5
ca3a7d8a69bd0df8bb627c432fa29001

SHA1
6a251dcca10958f7f9e5711a7e1eca6c501320cb

SHA256
f2e2b2e788e5c7337afc01430c6d97c32f06114cb06f9185a92049199a3b6ac0

SHA512
ce9622cdbae24c3434e17ad8e59526c3ee2a468e91628a3a00bd567248ce042c040007c9050da9c230f13be04f68a84ad637dd01d6886f4263f4ec852c5f1b32

Download Submit
C:\Windows\Installer\MSIF354.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

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

Filesize
883KB

MD5
4366cd6c5d795811822b9ccc3df3eab4

SHA1
30f6050729b4c08b7657454cb79dd5a3d463c606

SHA256
55497a3eced5d8d190400bcd1a4b43a304ebf74a0d6d098665474ed4b1b0e9da

SHA512
4a56a2da7ded16125c2795d5760c7c08a93362536c9212cff3a31dbf6613cb3fca436efd77c256338f5134da955bc7ccc564b4af0c45ac0dfd645460b922a349

Download Submit
memory/848-102-0x0000000071D30000-0x0000000072D92000-memory.dmp

Filesize
16.4MB

Download
memory/848-112-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-120-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-119-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-118-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-104-0x00000000779C0000-0x0000000077B69000-memory.dmp

Filesize
1.7MB

Download
memory/848-105-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-109-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-110-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-117-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-113-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-114-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-115-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/848-116-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/2528-98-0x00000000750A0000-0x0000000075214000-memory.dmp

Filesize
1.5MB

Download
memory/2528-51-0x00000000779C0000-0x0000000077B69000-memory.dmp

Filesize
1.7MB

Download
memory/2808-48-0x00000000750A0000-0x0000000075214000-memory.dmp

Filesize
1.5MB

Download
memory/2808-47-0x00000000750A0000-0x0000000075214000-memory.dmp

Filesize
1.5MB

Download