91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449

Analysis

max time kernel
153s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 21:08

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General

Target

91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe
Size

445KB
MD5

36c835ff6451b2b5621a7a98b6398bf5
SHA1

54c0619ad1b0f5ed0d10739d48a323a79582ac07
SHA256

91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449
SHA512

c95adf9ae8e8da3656a5e64281b2f9bd1f180c96fb308a7b8252fa3b7af558b1051d163e3c1fbbd5c973d5eeaef25072e98339318d4b91a7a7c7942b52bc0af3
SSDEEP

6144:dyJwXzalfrjZDiOpNyTKCYCNx6RX1r8nXxXIejPV4LFiP3bCWo:dyJwXelPVzpNyKCYCHUsXxjK8Vo

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1048	zaynpu.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\Currentversion\Run	zaynpu.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\{C3916187-556D-BCA0-4F67-978E82928D8C} = "C:\\Users\\Admin\\AppData\\Roaming\\Fuqu\\zaynpu.exe"	zaynpu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2852 set thread context of 1836	2852	91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe	84

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe
1048	zaynpu.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 1048	2852	91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe	83
PID 2852 wrote to memory of 1048	2852	91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe	83
PID 2852 wrote to memory of 1048	2852	91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe	83
PID 1048 wrote to memory of 2448	1048	zaynpu.exe	48
PID 1048 wrote to memory of 2448	1048	zaynpu.exe	48
PID 1048 wrote to memory of 2448	1048	zaynpu.exe	48
PID 1048 wrote to memory of 2448	1048	zaynpu.exe	48
PID 1048 wrote to memory of 2448	1048	zaynpu.exe	48
PID 1048 wrote to memory of 2464	1048	zaynpu.exe	47
PID 1048 wrote to memory of 2464	1048	zaynpu.exe	47
PID 1048 wrote to memory of 2464	1048	zaynpu.exe	47
PID 1048 wrote to memory of 2464	1048	zaynpu.exe	47
PID 1048 wrote to memory of 2464	1048	zaynpu.exe	47
PID 1048 wrote to memory of 2720	1048	zaynpu.exe	40
PID 1048 wrote to memory of 2720	1048	zaynpu.exe	40
PID 1048 wrote to memory of 2720	1048	zaynpu.exe	40
PID 1048 wrote to memory of 2720	1048	zaynpu.exe	40
PID 1048 wrote to memory of 2720	1048	zaynpu.exe	40
PID 1048 wrote to memory of 2708	1048	zaynpu.exe	38
PID 1048 wrote to memory of 2708	1048	zaynpu.exe	38
PID 1048 wrote to memory of 2708	1048	zaynpu.exe	38
PID 1048 wrote to memory of 2708	1048	zaynpu.exe	38
PID 1048 wrote to memory of 2708	1048	zaynpu.exe	38
PID 1048 wrote to memory of 2936	1048	zaynpu.exe	37
PID 1048 wrote to memory of 2936	1048	zaynpu.exe	37
PID 1048 wrote to memory of 2936	1048	zaynpu.exe	37
PID 1048 wrote to memory of 2936	1048	zaynpu.exe	37
PID 1048 wrote to memory of 2936	1048	zaynpu.exe	37
PID 1048 wrote to memory of 3260	1048	zaynpu.exe	36
PID 1048 wrote to memory of 3260	1048	zaynpu.exe	36
PID 1048 wrote to memory of 3260	1048	zaynpu.exe	36
PID 1048 wrote to memory of 3260	1048	zaynpu.exe	36
PID 1048 wrote to memory of 3260	1048	zaynpu.exe	36
PID 1048 wrote to memory of 3368	1048	zaynpu.exe	35
PID 1048 wrote to memory of 3368	1048	zaynpu.exe	35
PID 1048 wrote to memory of 3368	1048	zaynpu.exe	35
PID 1048 wrote to memory of 3368	1048	zaynpu.exe	35
PID 1048 wrote to memory of 3368	1048	zaynpu.exe	35
PID 1048 wrote to memory of 3440	1048	zaynpu.exe	11
PID 1048 wrote to memory of 3440	1048	zaynpu.exe	11
PID 1048 wrote to memory of 3440	1048	zaynpu.exe	11
PID 1048 wrote to memory of 3440	1048	zaynpu.exe	11
PID 1048 wrote to memory of 3440	1048	zaynpu.exe	11
PID 1048 wrote to memory of 3528	1048	zaynpu.exe	34
PID 1048 wrote to memory of 3528	1048	zaynpu.exe	34
PID 1048 wrote to memory of 3528	1048	zaynpu.exe	34
PID 1048 wrote to memory of 3528	1048	zaynpu.exe	34
PID 1048 wrote to memory of 3528	1048	zaynpu.exe	34
PID 1048 wrote to memory of 3756	1048	zaynpu.exe	33
PID 1048 wrote to memory of 3756	1048	zaynpu.exe	33
PID 1048 wrote to memory of 3756	1048	zaynpu.exe	33
PID 1048 wrote to memory of 3756	1048	zaynpu.exe	33
PID 1048 wrote to memory of 3756	1048	zaynpu.exe	33
PID 1048 wrote to memory of 2948	1048	zaynpu.exe	21
PID 1048 wrote to memory of 2948	1048	zaynpu.exe	21
PID 1048 wrote to memory of 2948	1048	zaynpu.exe	21
PID 1048 wrote to memory of 2948	1048	zaynpu.exe	21
PID 1048 wrote to memory of 2948	1048	zaynpu.exe	21
PID 1048 wrote to memory of 4388	1048	zaynpu.exe	16
PID 1048 wrote to memory of 4388	1048	zaynpu.exe	16
PID 1048 wrote to memory of 4388	1048	zaynpu.exe	16
PID 1048 wrote to memory of 4388	1048	zaynpu.exe	16
PID 1048 wrote to memory of 4388	1048	zaynpu.exe	16
PID 1048 wrote to memory of 1308	1048	zaynpu.exe	15

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3440

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:1328

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:1308

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
1⤵
PID:4388

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppX53ypgrj20bgndg05hj3tc7z654myszwp.mca
1⤵
PID:2948

C:\Windows\System32\RuntimeBroker.exe
C:\Windows\System32\RuntimeBroker.exe -Embedding
1⤵
PID:3756

C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
"C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
1⤵
PID:3528

C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
1⤵
PID:3368

C:\Windows\system32\DllHost.exe
C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
1⤵
PID:3260

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
1⤵
PID:2936

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2708
- C:\Users\Admin\AppData\Local\Temp\91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe
  "C:\Users\Admin\AppData\Local\Temp\91f2e9247915439dcab58bf89575d66c4935ee080cd1fee0ebd45540718c5449.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Users\Admin\AppData\Roaming\Fuqu\zaynpu.exe
    "C:\Users\Admin\AppData\Roaming\Fuqu\zaynpu.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1048
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpcecc7eb0.bat"
    3⤵
    PID:1836

C:\Windows\system32\taskhostw.exe
taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
1⤵
PID:2720

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
1⤵
PID:2464

C:\Windows\system32\sihost.exe
sihost.exe
1⤵
PID:2448

C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
1⤵
PID:3804

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpcecc7eb0.bat

Filesize
307B

MD5
78fec7921443ee7467fffd882c2a90ea

SHA1
61368875b95c392510c9ae84c0e6bb00180da968

SHA256
96cb3487c654858bcafcc6f9cfeda3ae106c86aae0773b3a5efbc8de73a51f70

SHA512
f99d37c52282536900c6dd315fb323bdfff6a2359748b328937b5a3886088c8750e2796b1857e8602d7b9eb5671a182a2623d5f3775afa00214277bc852c4c23

Download Submit
C:\Users\Admin\AppData\Roaming\Fuqu\zaynpu.exe

Filesize
445KB

MD5
fe4951d53cd7366a53331ec5024de61a

SHA1
ff6ce5e8584a05e4d94fbcd4218281e7a71a500e

SHA256
cd0ec3579bb564ad3e57d1e8b91f77751ed4f8194adc6329de820910446fe66e

SHA512
aa7d0ec2485dfce0da5fa51169f5b5514f45cd7bb141b6461b70491398d66dbad3b1f7b5a2362ea595a01ba86adc24e5b9f3b235fccca912c8510820a23605e6

Download Submit
C:\Users\Admin\AppData\Roaming\Fuqu\zaynpu.exe

Filesize
445KB

MD5
fe4951d53cd7366a53331ec5024de61a

SHA1
ff6ce5e8584a05e4d94fbcd4218281e7a71a500e

SHA256
cd0ec3579bb564ad3e57d1e8b91f77751ed4f8194adc6329de820910446fe66e

SHA512
aa7d0ec2485dfce0da5fa51169f5b5514f45cd7bb141b6461b70491398d66dbad3b1f7b5a2362ea595a01ba86adc24e5b9f3b235fccca912c8510820a23605e6

Download Submit
memory/1048-147-0x0000000001FB0000-0x0000000001FFC000-memory.dmp

Filesize
304KB

Download
memory/1048-158-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/1048-149-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/1836-150-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1836-157-0x0000000000E00000-0x0000000000E4C000-memory.dmp

Filesize
304KB

Download
memory/1836-155-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1836-154-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1836-153-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1836-145-0x0000000000E00000-0x0000000000E4C000-memory.dmp

Filesize
304KB

Download
memory/1836-152-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/1836-151-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-132-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2852-134-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2852-148-0x0000000002770000-0x00000000027BC000-memory.dmp

Filesize
304KB

Download
memory/2852-139-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-146-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/2852-140-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-143-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-141-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-135-0x0000000000400000-0x0000000000471000-memory.dmp

Filesize
452KB

Download
memory/2852-142-0x000000006FFF0000-0x0000000070000000-memory.dmp

Filesize
64KB

Download
memory/2852-133-0x00000000022A0000-0x00000000022EC000-memory.dmp

Filesize
304KB

Download