hijackloader | 4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
02-02-2025 04:16

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General

Target

4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3.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/0x0007000000023c3f-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)	\??\P:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\S:	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)	\??\R:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4472 set thread context of 1172	4472	EHttpSrv.exe	92
PID 1172 set thread context of 4700	1172	cmd.exe	95

Drops file in Windows directory 11 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSID777.tmp	msiexec.exe
File created	C:\Windows\Installer\inprogressinstallinfo.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID7D6.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\e57d580.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID5CE.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSID757.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File created	C:\Windows\Installer\SourceHash{22A1B846-663B-4818-9F81-5998C4D634C7}	msiexec.exe
File created	C:\Windows\Installer\e57d580.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\MSID6F8.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
4472	EHttpSrv.exe

Loads dropped DLL 7 IoCs

pid	Process
1936	MsiExec.exe
1936	MsiExec.exe
1936	MsiExec.exe
1936	MsiExec.exe
4472	EHttpSrv.exe
4472	EHttpSrv.exe
4700	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
4328	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
4540	msiexec.exe
4540	msiexec.exe
4472	EHttpSrv.exe
1172	cmd.exe
1172	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
4472	EHttpSrv.exe
1172	cmd.exe
1172	cmd.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4328	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4328	msiexec.exe
Token: SeSecurityPrivilege	4540	msiexec.exe
Token: SeCreateTokenPrivilege	4328	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	4328	msiexec.exe
Token: SeLockMemoryPrivilege	4328	msiexec.exe
Token: SeIncreaseQuotaPrivilege	4328	msiexec.exe
Token: SeMachineAccountPrivilege	4328	msiexec.exe
Token: SeTcbPrivilege	4328	msiexec.exe
Token: SeSecurityPrivilege	4328	msiexec.exe
Token: SeTakeOwnershipPrivilege	4328	msiexec.exe
Token: SeLoadDriverPrivilege	4328	msiexec.exe
Token: SeSystemProfilePrivilege	4328	msiexec.exe
Token: SeSystemtimePrivilege	4328	msiexec.exe
Token: SeProfSingleProcessPrivilege	4328	msiexec.exe
Token: SeIncBasePriorityPrivilege	4328	msiexec.exe
Token: SeCreatePagefilePrivilege	4328	msiexec.exe
Token: SeCreatePermanentPrivilege	4328	msiexec.exe
Token: SeBackupPrivilege	4328	msiexec.exe
Token: SeRestorePrivilege	4328	msiexec.exe
Token: SeShutdownPrivilege	4328	msiexec.exe
Token: SeDebugPrivilege	4328	msiexec.exe
Token: SeAuditPrivilege	4328	msiexec.exe
Token: SeSystemEnvironmentPrivilege	4328	msiexec.exe
Token: SeChangeNotifyPrivilege	4328	msiexec.exe
Token: SeRemoteShutdownPrivilege	4328	msiexec.exe
Token: SeUndockPrivilege	4328	msiexec.exe
Token: SeSyncAgentPrivilege	4328	msiexec.exe
Token: SeEnableDelegationPrivilege	4328	msiexec.exe
Token: SeManageVolumePrivilege	4328	msiexec.exe
Token: SeImpersonatePrivilege	4328	msiexec.exe
Token: SeCreateGlobalPrivilege	4328	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe
Token: SeRestorePrivilege	4540	msiexec.exe
Token: SeTakeOwnershipPrivilege	4540	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4328	msiexec.exe
4328	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 1936	4540	msiexec.exe	89
PID 4540 wrote to memory of 1936	4540	msiexec.exe	89
PID 4540 wrote to memory of 1936	4540	msiexec.exe	89
PID 4540 wrote to memory of 4472	4540	msiexec.exe	91
PID 4540 wrote to memory of 4472	4540	msiexec.exe	91
PID 4540 wrote to memory of 4472	4540	msiexec.exe	91
PID 4472 wrote to memory of 1172	4472	EHttpSrv.exe	92
PID 4472 wrote to memory of 1172	4472	EHttpSrv.exe	92
PID 4472 wrote to memory of 1172	4472	EHttpSrv.exe	92
PID 4472 wrote to memory of 1172	4472	EHttpSrv.exe	92
PID 1172 wrote to memory of 4700	1172	cmd.exe	95
PID 1172 wrote to memory of 4700	1172	cmd.exe	95
PID 1172 wrote to memory of 4700	1172	cmd.exe	95
PID 1172 wrote to memory of 4700	1172	cmd.exe	95
PID 1172 wrote to memory of 4700	1172	cmd.exe	95

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\4fda049f94e2b9127b71cb11588cac6b379d4dddab47f6e2f028fdaaf79ad8d3.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:4328

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:4540
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding 2109E194D970048E95E4F604A8565BF5
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1936
- 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:4472
- - 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:1172
  - - 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:4700

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\e57d583.rbs

Filesize
2KB

MD5
684aa26fb43a5b8a9f73ec493512c151

SHA1
bcc253fb0a9e3f0a22f7709c94567482fc4d9759

SHA256
24d03eefe3d7804f4219f54bb7110378a43a07927ea7bd71df651c90d6020ea8

SHA512
7a8a1fb0dbc8c9a083cc7d57bf0ec8ac087e933a095519940949f94f642f70f0d2eaa582d3dd2a168a4ead3ca8f01d0d4ffad5c07e79dfa364d750b22e7096b8

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\7d3c9289

Filesize
1.0MB

MD5
49d8e4d89b2bc211302726fb807e61b5

SHA1
36959e839d8b79b17f058241198f4b5b2f77cfad

SHA256
709725e32b50205283a741dd8b67af8574d9569f5ece351e7761891326a10365

SHA512
02ada95d5cf0dcf544a7bfb6a49fdbc059a490ec9187c21cfcce65fb49000a0f6a374b80b3868e93fe1bf1d8af023169d12cde9f6e497ef3945a6d01c4a2a555

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI7d428.LOG

Filesize
21KB

MD5
afa7574ab28ffd8e4f05c60cf86a5056

SHA1
023e516b21df7af03f0315df8c1afaa69b6847e8

SHA256
d6abe3005bec898a5a3a6bb445963c4ecfa478dc70a997b61fc52bc274024bed

SHA512
6e1cae4be34f7e2ee331f6a6daee7d6bbfbd863247fef9d70988be96ebb16495eb7faf808b85d3d802ca72d21c7d14749134112d181d07fbb5b67ca827022cb4

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\MSID5CE.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/1172-54-0x00007FFEDDFF0000-0x00007FFEDE1E5000-memory.dmp

Filesize
2.0MB

Download
memory/1172-56-0x0000000074320000-0x000000007449B000-memory.dmp

Filesize
1.5MB

Download
memory/4472-45-0x0000000074320000-0x000000007449B000-memory.dmp

Filesize
1.5MB

Download
memory/4472-51-0x0000000074320000-0x000000007449B000-memory.dmp

Filesize
1.5MB

Download
memory/4700-58-0x00000000730C0000-0x0000000074314000-memory.dmp

Filesize
18.3MB

Download
memory/4700-60-0x00007FFEDDFF0000-0x00007FFEDE1E5000-memory.dmp

Filesize
2.0MB

Download
memory/4700-61-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-64-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-65-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-67-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-68-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-69-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-70-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-71-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-72-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-73-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-74-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download
memory/4700-75-0x0000000000410000-0x0000000000494000-memory.dmp

Filesize
528KB

Download