cfc1155f576b0a19d0751b0ae796e7db156ebc7ee8bfa38a735d6856351e2336

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
24-09-2024 08:21

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General

Target

20240923_install.exe
Size

6.1MB
MD5

af3b09dc8f43ff7698b730ff6b784ad7
SHA1

64b493ed97860eb865e8d43f51c1adf81dd712c9
SHA256

afd5e03f10dbda275fc21e9e6b2387c99ee8f5977df22cd395082b9f825a2623
SHA512

edf170607e74fbbabc29ff50efb2be30baa0e12a231e9ab131380ef842ce4e7874b2e03fd6acabd2b9f05a33ee1b855c3afccc43cecfbbf2b213acae65dc6efe
SSDEEP

98304:efRnOrG2ohf0kGVrr0K4aueL2hbiD9kl7fIJJDKnD0F9OuuJFVyYU8tK:epeGjhMk60gTwbi6IoM9O3JFV5U8tK

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work	svchost.exe
File opened for modification	C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Scan	svchost.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 2728	1120	svchost.exe	84
PID 2728 set thread context of 2212	2728	svchost.exe	85

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHZ	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum 64-bit	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft	svchost.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie	svchost.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\ActiveMovie\devenum 64-bit\Version = "7"	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
900	20240923_install.exe
900	20240923_install.exe
900	20240923_install.exe
900	20240923_install.exe
900	20240923_install.exe
900	20240923_install.exe
864	assist.exe
864	assist.exe
864	assist.exe
864	assist.exe
864	assist.exe
864	assist.exe
3652	assist.exe
3652	assist.exe
3652	assist.exe
3652	assist.exe
3652	assist.exe
3652	assist.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
1120	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2212	dllhost.exe
2212	dllhost.exe
2212	dllhost.exe
2212	dllhost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe
2728	svchost.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	3652	assist.exe
Token: SeDebugPrivilege	3652	assist.exe
Token: SeDebugPrivilege	1120	svchost.exe
Token: SeDebugPrivilege	2728	svchost.exe
Token: SeDebugPrivilege	2728	svchost.exe
Token: SeDebugPrivilege	2728	svchost.exe
Token: SeDebugPrivilege	2728	svchost.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 3424	900	20240923_install.exe	55
PID 900 wrote to memory of 3424	900	20240923_install.exe	55
PID 900 wrote to memory of 3424	900	20240923_install.exe	55
PID 900 wrote to memory of 3424	900	20240923_install.exe	55
PID 900 wrote to memory of 3424	900	20240923_install.exe	55
PID 3652 wrote to memory of 1120	3652	assist.exe	19
PID 3652 wrote to memory of 1120	3652	assist.exe	19
PID 3652 wrote to memory of 1120	3652	assist.exe	19
PID 1120 wrote to memory of 2728	1120	svchost.exe	84
PID 1120 wrote to memory of 2728	1120	svchost.exe	84
PID 1120 wrote to memory of 2728	1120	svchost.exe	84
PID 1120 wrote to memory of 2728	1120	svchost.exe	84
PID 1120 wrote to memory of 2728	1120	svchost.exe	84
PID 2728 wrote to memory of 2212	2728	svchost.exe	85
PID 2728 wrote to memory of 2212	2728	svchost.exe	85
PID 2728 wrote to memory of 2212	2728	svchost.exe	85
PID 2728 wrote to memory of 2212	2728	svchost.exe	85
PID 2728 wrote to memory of 2212	2728	svchost.exe	85

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
1⤵
- Drops file in System32 directory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\system32\svchost.exe
  C:\Windows\system32\svchost.exe -k netsvcs
  2⤵
  - Suspicious use of SetThreadContext
  - Checks processor information in registry
  - Modifies data under HKEY_USERS
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2728
- - C:\Windows\system32\dllhost.exe
    C:\Windows\system32\dllhost.exe /Processid:{F8284233-48F4-4680-ADDD-F8284233}
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:2212

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\20240923_install.exe
  "C:\Users\Admin\AppData\Local\Temp\20240923_install.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:900
- C:\Users\Admin\AppData\Local\Temp\assist.exe
  "C:\Users\Admin\AppData\Local\Temp\assist.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:864

C:\Program Files\Windows NT\assist.exe
"C:\Program Files\Windows NT\assist.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work

Filesize
2KB

MD5
8abf2d6067c6f3191a015f84aa9b6efe

SHA1
98f2b0a5cdb13cd3d82dc17bd43741bf0b3496f7

SHA256
ee18bd3259f220c41062abcbe71a421da3e910df11b9f86308a16cdc3a66fbea

SHA512
c2d686a6373efcff583c1ef50c144c59addb8b9c4857ccd8565cd8be3c94b0ac0273945167eb04ebd40dfb0351e4b66cffe4c4e478fb7733714630a11f765b63

Download Submit
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work

Filesize
2KB

MD5
f313c5b4f95605026428425586317353

SHA1
06be66fa06e1cffc54459c38d3d258f46669d01a

SHA256
129d0b993cd3858af5b7e87fdf74d8e59e6f2110184b5c905df8f5f6f2c39d8b

SHA512
b87a829c86eff1d10e1590b18a9909f05101a535e5f4cef914a4192956eb35a8bfef614c9f95d53783d77571687f3eb3c4e8ee2f24d23ad24e0976d8266b8890

Download Submit
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work

Filesize
2KB

MD5
ceb7caa4e9c4b8d760dbf7e9e5ca44c5

SHA1
a3879621f9493414d497ea6d70fbf17e283d5c08

SHA256
98c054088df4957e8d6361fd2539c219bcf35f8a524aad8f5d1a95f218e990e9

SHA512
1eddfbf4cb62d3c5b4755a371316304aaeabb00f01bad03fb4f925a98a2f0824f613537d86deddd648a74d694dc13ed5183e761fdc1ec92589f6fa28beb7fbff

Download Submit
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work

Filesize
2KB

MD5
7d612892b20e70250dbd00d0cdd4f09b

SHA1
63251cfa4e5d6cbf6fb14f6d8a7407dbe763d3f5

SHA256
727c9e7b91e144e453d5b32e18f12508ee84dabe71bc852941d9c9b4923f9e02

SHA512
f8d481f3300947d49ce5ab988a9d4e3154746afccc97081cbed1135ffb24fc107203d485dda2d5d714e74e752c614d8cfd16781ea93450fe782ffae3f77066d1

Download Submit
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work

Filesize
2KB

MD5
1e8e2076314d54dd72e7ee09ff8a52ab

SHA1
5fd0a67671430f66237f483eef39ff599b892272

SHA256
55f203d6b40a39a6beba9dd3a2cb9034284f49578009835dd4f0f8e1db6ebe2f

SHA512
5b0c97284923c4619d9c00cba20ce1c6d65d1826abe664c390b04283f7a663256b4a6efe51f794cb5ec82ccea80307729addde841469da8d041cbcfd94feb0f6

Download Submit
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work

Filesize
2KB

MD5
0b990e24f1e839462c0ac35fef1d119e

SHA1
9e17905f8f68f9ce0a2024d57b537aa8b39c6708

SHA256
a1106ed0845cd438e074344e0fe296dc10ee121a0179e09398eaaea2357c614a

SHA512
c65ba42fc0a2cb0b70888beb8ca334f7d5a8eaf954a5ef7adaecbcb4ce8d61b34858dfd9560954f95f59b4d8110a79ceaa39088b6a0caf8b42ceda41b46ec4a4

Download Submit
memory/864-36-0x0000000140000000-0x00000001401AB000-memory.dmp

Filesize
1.7MB

Download
memory/864-13-0x00007FF8A1DB0000-0x00007FF8A1FA5000-memory.dmp

Filesize
2.0MB

Download
memory/864-8-0x0000000140000000-0x00000001401AB000-memory.dmp

Filesize
1.7MB

Download
memory/864-35-0x00007FF892C80000-0x00007FF892EFB000-memory.dmp

Filesize
2.5MB

Download
memory/864-10-0x0000000180000000-0x000000018006A000-memory.dmp

Filesize
424KB

Download
memory/900-0-0x000001487DE00000-0x000001487DE01000-memory.dmp

Filesize
4KB

Download
memory/900-1-0x0000000180000000-0x000000018000D000-memory.dmp

Filesize
52KB

Download
memory/1120-25-0x0000014870B00000-0x0000014870B01000-memory.dmp

Filesize
4KB

Download
memory/2212-56-0x00007FF8A1DB0000-0x00007FF8A1FA5000-memory.dmp

Filesize
2.0MB

Download
memory/2728-37-0x0000027C45FC0000-0x0000027C45FC1000-memory.dmp

Filesize
4KB

Download
memory/2728-43-0x00007FF8A1DB0000-0x00007FF8A1FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3652-24-0x00007FF8A1DB0000-0x00007FF8A1FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3652-19-0x0000000140000000-0x00000001401AB000-memory.dmp

Filesize
1.7MB

Download
memory/3652-28-0x0000000140000000-0x00000001401AB000-memory.dmp

Filesize
1.7MB

Download