hijackloader | d03d7ea5956a5d9ca6c1b1af800350b6ef400815b452f69a886f4156ba1a3ec5

Analysis

max time kernel
148s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-01-2025 04:30

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General

Target

d03d7ea5956a5d9ca6c1b1af800350b6ef400815b452f69a886f4156ba1a3ec5.msi
Size

4.3MB
MD5

8e31046891c36ca794fb01262cd890d9
SHA1

7f812da89f328e871290be32bdead1fc869377d6
SHA256

d03d7ea5956a5d9ca6c1b1af800350b6ef400815b452f69a886f4156ba1a3ec5
SHA512

95c4c8f0196a8e373913fc41eb44c70fa8abbea38324993aa42ca05be5d6229430a4e2a4671a914a4f00986b75845c247a91809aae994ff835aa56614606840d
SSDEEP

98304:uo6S33tZCcSqsOEUalW+TTsKBqVauPWJg9tyEsM2:uQ3DCcOzUaleKB4NcOoH

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/0x0006000000016dea-41.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)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\J:	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)	\??\U:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\T:	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)	\??\S:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\J:	msiexec.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 988 set thread context of 1656	988	EHttpSrv.exe	33
PID 1656 set thread context of 1764	1656	cmd.exe	35

Drops file in Program Files directory 8 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\msvcr80.dll	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\audiogram.tif	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\EHttpSrv.exe	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\http_dll.dll	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\mfc80u.dll	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\Microsoft.VC80.CRT.manifest	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\Microsoft.VC80.MFC.manifest	msiexec.exe
File created	C:\Program Files (x86)\Common Files\PackagerUpdt\Microsoft.VC80.MFCLOC.manifest	msiexec.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Installer\MSI627A.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6327.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6347.tmp	msiexec.exe
File opened for modification	C:\Windows\Installer\	msiexec.exe
File opened for modification	C:\Windows\Installer\f76622f.ipi	msiexec.exe
File created	C:\Windows\Installer\f76622c.msi	msiexec.exe
File opened for modification	C:\Windows\Installer\f76622c.msi	msiexec.exe
File created	C:\Windows\Installer\f76622f.ipi	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI64AF.tmp	msiexec.exe

Executes dropped EXE 1 IoCs

pid	Process
988	EHttpSrv.exe

Loads dropped DLL 8 IoCs

pid	Process
2784	MsiExec.exe
2784	MsiExec.exe
2784	MsiExec.exe
988	EHttpSrv.exe
988	EHttpSrv.exe
1656	cmd.exe
1656	cmd.exe
1764	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
2900	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
988	EHttpSrv.exe
1656	cmd.exe
1656	cmd.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
988	EHttpSrv.exe
1656	cmd.exe
1656	cmd.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeShutdownPrivilege	2900	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2900	msiexec.exe
Token: SeRestorePrivilege	2788	msiexec.exe
Token: SeTakeOwnershipPrivilege	2788	msiexec.exe
Token: SeSecurityPrivilege	2788	msiexec.exe
Token: SeCreateTokenPrivilege	2900	msiexec.exe
Token: SeAssignPrimaryTokenPrivilege	2900	msiexec.exe
Token: SeLockMemoryPrivilege	2900	msiexec.exe
Token: SeIncreaseQuotaPrivilege	2900	msiexec.exe
Token: SeMachineAccountPrivilege	2900	msiexec.exe
Token: SeTcbPrivilege	2900	msiexec.exe
Token: SeSecurityPrivilege	2900	msiexec.exe
Token: SeTakeOwnershipPrivilege	2900	msiexec.exe
Token: SeLoadDriverPrivilege	2900	msiexec.exe
Token: SeSystemProfilePrivilege	2900	msiexec.exe
Token: SeSystemtimePrivilege	2900	msiexec.exe
Token: SeProfSingleProcessPrivilege	2900	msiexec.exe
Token: SeIncBasePriorityPrivilege	2900	msiexec.exe
Token: SeCreatePagefilePrivilege	2900	msiexec.exe
Token: SeCreatePermanentPrivilege	2900	msiexec.exe
Token: SeBackupPrivilege	2900	msiexec.exe
Token: SeRestorePrivilege	2900	msiexec.exe
Token: SeShutdownPrivilege	2900	msiexec.exe
Token: SeDebugPrivilege	2900	msiexec.exe
Token: SeAuditPrivilege	2900	msiexec.exe
Token: SeSystemEnvironmentPrivilege	2900	msiexec.exe
Token: SeChangeNotifyPrivilege	2900	msiexec.exe
Token: SeRemoteShutdownPrivilege	2900	msiexec.exe
Token: SeUndockPrivilege	2900	msiexec.exe
Token: SeSyncAgentPrivilege	2900	msiexec.exe
Token: SeEnableDelegationPrivilege	2900	msiexec.exe
Token: SeManageVolumePrivilege	2900	msiexec.exe
Token: SeImpersonatePrivilege	2900	msiexec.exe
Token: SeCreateGlobalPrivilege	2900	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
2900	msiexec.exe
2900	msiexec.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 2784	2788	msiexec.exe	31
PID 2788 wrote to memory of 988	2788	msiexec.exe	32
PID 2788 wrote to memory of 988	2788	msiexec.exe	32
PID 2788 wrote to memory of 988	2788	msiexec.exe	32
PID 2788 wrote to memory of 988	2788	msiexec.exe	32
PID 988 wrote to memory of 1656	988	EHttpSrv.exe	33
PID 988 wrote to memory of 1656	988	EHttpSrv.exe	33
PID 988 wrote to memory of 1656	988	EHttpSrv.exe	33
PID 988 wrote to memory of 1656	988	EHttpSrv.exe	33
PID 988 wrote to memory of 1656	988	EHttpSrv.exe	33
PID 1656 wrote to memory of 1764	1656	cmd.exe	35
PID 1656 wrote to memory of 1764	1656	cmd.exe	35
PID 1656 wrote to memory of 1764	1656	cmd.exe	35
PID 1656 wrote to memory of 1764	1656	cmd.exe	35
PID 1656 wrote to memory of 1764	1656	cmd.exe	35
PID 1656 wrote to memory of 1764	1656	cmd.exe	35

C:\Windows\system32\msiexec.exe
msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\d03d7ea5956a5d9ca6c1b1af800350b6ef400815b452f69a886f4156ba1a3ec5.msi
1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2900

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- 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 96241CF8DCA4C7F3DC6E7DB9FC63D717
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Program Files (x86)\Common Files\PackagerUpdt\EHttpSrv.exe
  "C:\Program Files (x86)\Common Files\PackagerUpdt\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:988
- - 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:1656
  - - C:\Program Files (x86)\Common Files\PackagerUpdt\EHttpSrv.exe
      "C:\Program Files (x86)\Common Files\PackagerUpdt\EHttpSrv.exe"
      4⤵
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:1764

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\f766230.rbs

Filesize
2KB

MD5
604241c2abdc7883a686a9cdad22fab6

SHA1
11152f047114b2e187dbded7fa176403756c77cf

SHA256
e03abf09bcfcbea0bc9e003193a185c3603c058bb86d0a5c4a561f78b34970dc

SHA512
3cc4bc582e9c350db43d25db511c9fef39db2536f2a4243e8058813eb251b8b247afe8186e8d08b9aedb82f6512e132bcfa17a8c262a87fb73b173361ef76965

Download Submit
C:\Program Files (x86)\Common Files\PackagerUpdt\EHttpSrv.exe

Filesize
20KB

MD5
9329ba45c8b97485926a171e34c2abb8

SHA1
20118bc0432b4e8b3660a4b038b20ca28f721e5c

SHA256
effa6fcb8759375b4089ccf61202a5c63243f4102872e64e3eb0a1bdc2727659

SHA512
0af06b5495142ba0632a46be0778a7bd3d507e9848b3159436aa504536919abbcacd8b740ef4b591296e86604b49e0642fee2c273a45e44b41a80f91a1d52acc

Download Submit
C:\Program Files (x86)\Common Files\PackagerUpdt\MFC80U.DLL

Filesize
1.0MB

MD5
686b224b4987c22b153fbb545fee9657

SHA1
684ee9f018fbb0bbf6ffa590f3782ba49d5d096c

SHA256
a2ac851f35066c2f13a7452b7a9a3fee05bfb42907ae77a6b85b212a2227fc36

SHA512
44d65db91ceea351d2b6217eaa27358dbc2ed27c9a83d226b59aecb336a9252b60aec5ce5e646706a2af5631d5ee0f721231ec751e97e47bbbc32d5f40908875

Download Submit
C:\Program Files (x86)\Common Files\PackagerUpdt\audiogram.tif

Filesize
877KB

MD5
5124236fd955464317fbb1f344a1d2f2

SHA1
fe3a91e252f1dc3c3b4980ade7157369ea6f5097

SHA256
ed1389002cdf96c9b54de35b6e972166ee3296d628943fd594a383e674c5cba6

SHA512
2b2ac23244b16f936ef9a4049586f58c809fcc4391a56390cc5db2e8d96140001e0b977680ed1d8b0ab9c410e865a880209e22add8d42e563dc40bc91236b252

Download Submit
C:\Program Files (x86)\Common Files\PackagerUpdt\http_dll.dll

Filesize
2.3MB

MD5
1e2a640f1a98da16fc61c865cec7d54e

SHA1
178563fab7b06e99551f66ba090d0911205a2fe4

SHA256
e296a18272a7bde471f37e51d49e6febe944ed4e78a2d5e79f1b2ee3330fb10f

SHA512
2426b1ce2bd01af6f34c56e1ef0290e521566ae1196a15aeb594bcf33793aa405ce01b4196bfe48de33320bab7a570a55110995025c54edcf790c2d10166fa9c

Download Submit
C:\Users\Admin\AppData\Local\Temp\11417eb6

Filesize
1.0MB

MD5
6a8cd807c74b4391df393ada4d3db9e8

SHA1
6f242b519ff963ebcf4920fdb4a7d25e8bda3da9

SHA256
ba7ce2c2fb44f971a608502c6bb9320df992b39b2051091f851464073010903f

SHA512
9c61e3b214870f7f7afc4da6d3efa260d129755b1ccb0ec223c809e6cc818b1f9989894b593840a5f601839a3f688f53ffe2101a87b6862849cc29c239ecde70

Download Submit
C:\Users\Admin\AppData\Local\Temp\MSI661b0.LOG

Filesize
21KB

MD5
9ba805a15fd2de966b4a7b8d35225858

SHA1
60c1df297e73f193580b01f4c84c513f58081bf0

SHA256
575626f3c8b332283f9d4d1e7d7c82c4d430ec8c92ba60c7a730e84ffd468363

SHA512
4ef46c6966dbe9c70b95ea4e757d85000aa67634f6517d7f9db72834b89aacfa885d0b214f77d6c44aefbbfb8809abbc6d718efcb1a3f4774e9f024b377e2714

Download Submit
C:\Windows\Installer\MSI627A.tmp

Filesize
557KB

MD5
2c9c51ac508570303c6d46c0571ea3a1

SHA1
e3e0fe08fa11a43c8bca533f212bdf0704c726d5

SHA256
ff86c76a8d5846b3a1ad58ff2fd8e5a06a84eb5899cdee98e59c548d33335550

SHA512
df5f1def5aac44f39a2dfde9c6c73f15f83a7374b4ad42b67e425ccb7ac99a64c5701b676ae46d2f7167a04a955158031a839e7878d100aaf8fab0ce2059f127

Download Submit
memory/988-42-0x0000000073AC0000-0x0000000073C34000-memory.dmp

Filesize
1.5MB

Download
memory/988-43-0x0000000073AC0000-0x0000000073C34000-memory.dmp

Filesize
1.5MB

Download
memory/1656-51-0x0000000076DF0000-0x0000000076F99000-memory.dmp

Filesize
1.7MB

Download
memory/1656-78-0x0000000073AC0000-0x0000000073C34000-memory.dmp

Filesize
1.5MB

Download
memory/1764-81-0x0000000072370000-0x00000000733D2000-memory.dmp

Filesize
16.4MB

Download
memory/1764-83-0x0000000076DF0000-0x0000000076F99000-memory.dmp

Filesize
1.7MB

Download
memory/1764-84-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-88-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-89-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-91-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-92-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-93-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-94-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-95-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-96-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-97-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-98-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download
memory/1764-99-0x00000000001C0000-0x0000000000244000-memory.dmp

Filesize
528KB

Download