hijackloader | e483ca3bc78e49f0ceef3406ea963101fe1d2b08b4bace6945ac9298222b8c37

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-11-2024 09:56

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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
behavioral2/files/0x000a000000023b7f-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)	\??\H:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5084 set thread context of 4400	5084	EHttpSrv.exe	90
PID 4400 set thread context of 1852	4400	cmd.exe	110

Drops file in Windows directory 11 IoCs

description	ioc	Process
File created	C:\Windows\Installer\e579308.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\MSI9376.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI981D.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\e579308.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI956B.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI9627.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI9667.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{BB2F3E18-3F04-450F-B8B5-60A9665181A8}	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
5084	EHttpSrv.exe

Loads dropped DLL 7 IoCs

pid	Process
4216	MsiExec.exe
4216	MsiExec.exe
4216	MsiExec.exe
4216	MsiExec.exe
5084	EHttpSrv.exe
5084	EHttpSrv.exe
1852	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
4572	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
2788	msiexec.exe
2788	msiexec.exe
5084	EHttpSrv.exe
4400	cmd.exe
4400	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
5084	EHttpSrv.exe
4400	cmd.exe
4400	cmd.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4572	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4572	msiexec.exe
Token: SeSecurityPrivilege	2788	msiexec.exe
Token: SeCreateTokenPrivilege	4572	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4572	msiexec.exe
Token: SeLockMemoryPrivilege	4572	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4572	msiexec.exe
Token: SeMachineAccountPrivilege	4572	msiexec.exe
Token: SeTcbPrivilege	4572	msiexec.exe
Token: SeSecurityPrivilege	4572	msiexec.exe
Token: SeTakeOwnershipPrivilege	4572	msiexec.exe
Token: SeLoadDriverPrivilege	4572	msiexec.exe
Token: SeSystemProfilePrivilege	4572	msiexec.exe
Token: SeSystemtimePrivilege	4572	msiexec.exe
Token: SeProfSingleProcessPrivilege	4572	msiexec.exe
Token: SeIncBasePriorityPrivilege	4572	msiexec.exe
Token: SeCreatePagefilePrivilege	4572	msiexec.exe
Token: SeCreatePermanentPrivilege	4572	msiexec.exe
Token: SeBackupPrivilege	4572	msiexec.exe
Token: SeRestorePrivilege	4572	msiexec.exe
Token: SeShutdownPrivilege	4572	msiexec.exe
Token: SeDebugPrivilege	4572	msiexec.exe
Token: SeAuditPrivilege	4572	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4572	msiexec.exe
Token: SeChangeNotifyPrivilege	4572	msiexec.exe
Token: SeRemoteShutdownPrivilege	4572	msiexec.exe
Token: SeUndockPrivilege	4572	msiexec.exe
Token: SeSyncAgentPrivilege	4572	msiexec.exe
Token: SeEnableDelegationPrivilege	4572	msiexec.exe
Token: SeManageVolumePrivilege	4572	msiexec.exe
Token: SeImpersonatePrivilege	4572	msiexec.exe
Token: SeCreateGlobalPrivilege	4572	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4572	msiexec.exe
4572	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 4216	2788	msiexec.exe	88
PID 2788 wrote to memory of 4216	2788	msiexec.exe	88
PID 2788 wrote to memory of 4216	2788	msiexec.exe	88
PID 2788 wrote to memory of 5084	2788	msiexec.exe	89
PID 2788 wrote to memory of 5084	2788	msiexec.exe	89
PID 2788 wrote to memory of 5084	2788	msiexec.exe	89
PID 5084 wrote to memory of 4400	5084	EHttpSrv.exe	90
PID 5084 wrote to memory of 4400	5084	EHttpSrv.exe	90
PID 5084 wrote to memory of 4400	5084	EHttpSrv.exe	90
PID 5084 wrote to memory of 4400	5084	EHttpSrv.exe	90
PID 4400 wrote to memory of 1852	4400	cmd.exe	110
PID 4400 wrote to memory of 1852	4400	cmd.exe	110
PID 4400 wrote to memory of 1852	4400	cmd.exe	110
PID 4400 wrote to memory of 1852	4400	cmd.exe	110
PID 4400 wrote to memory of 1852	4400	cmd.exe	110

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:4572

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:2788
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 54619C228F5CC4784F889B61E4F7A0C0
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:4216
- 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:5084
- - 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:4400
  - - 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:1852

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\e57930b.rbs

Filesize
2KB

MD5
b0ab1f982dea9c56d2b6ad2fe0455a3e

SHA1
b1fa0082ce85f33680ecfbb18072bc4d06458378

SHA256
84b89df9d7388d23e47aa29e91edce9dc69bde13db1db32bbd36114cbc434607

SHA512
80c4f1e91c58885b545e2df9e9e215143316d1987d0f4e4b502c63d7a3fe16fbfd74bc545040bb8472896c797dd638d88559af2c3b4e01947566ef0cfee81643

Download Submit
C:\Users\Admin\AppData\Local\Temp\1d9a37d5

Filesize
1.0MB

MD5
94928a9d5b29b29a46f940040ceb974d

SHA1
6268587b81138242cf70f5e69f48fef1687243bc

SHA256
74ea278b06c5720f699fbe76527620f783f2695429ae3c3aca9cec55e0c533a2

SHA512
629155878eba536ff1250ef3e28d38cd189b865c2f8c61f9a39bc798595b1d29bdf1885b55bf4559c8f31f2870960d7c5bee0c9984d6bf2ba0ecd4ce6f6739c6

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\MSI78ec3.LOG

Filesize
20KB

MD5
1744f1257fabf550f91c671e78a80622

SHA1
223b94f69b6e0b2f4d119b35d1007a214373d0d6

SHA256
79c91348d78426ddd7599842f7fbc11e23b64f98bec29979bd296a69d7be207d

SHA512
bc85539b36501e104a6164713aaaf955baeffecfadc5969a9aca1493323e37f318a8ef33446e0502d06dc1862c4dde2d714ef11a123f2c77c409f02edf1d26f2

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\MSI9376.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/1852-58-0x00000000732E0000-0x0000000074534000-memory.dmp

Filesize
18.3MB

Download
memory/1852-68-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-73-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-72-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-71-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-60-0x00007FFD83130000-0x00007FFD83325000-memory.dmp

Filesize
2.0MB

Download
memory/1852-61-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-64-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-65-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-67-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-70-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/1852-69-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4400-56-0x0000000074720000-0x000000007489B000-memory.dmp

Filesize
1.5MB

Download
memory/4400-54-0x00007FFD83130000-0x00007FFD83325000-memory.dmp

Filesize
2.0MB

Download
memory/5084-51-0x0000000074720000-0x000000007489B000-memory.dmp

Filesize
1.5MB

Download
memory/5084-45-0x0000000074720000-0x000000007489B000-memory.dmp

Filesize
1.5MB

Download