9b550290b925e68da43d0254e187f3bd53d73778e2fec286ebe66db8da1a5dd5

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231130-en
resource tags

arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system
submitted
09/12/2023, 16:21

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General

Target
2872FBFAF9519BE85B44C6B5E7A5418C.exe
Size 524KB
Sample231209-ttmt9shchj
SHA256 9b550290b925e68da43d0254e187f3bd53d73778e2fec286ebe66db8da1a5dd5
MD5 2872fbfaf9519be85b44c6b5e7a5418c
SHA1 2914374562d22fcebce1612b04ea562e805907ba
SHA512 ba87d865ed01293f2c4bc1da2afcca9ed878422fdbdfac7d3199fceaf04c3fb09c74a3785df17cb1f1a6aa65eb1e72082b3ad5288f9de4f193715121e2d7df93
SSDEEP 6144:Q8LxB75+ht/yWBu/45iuzaOw7wPkdf6oo8vZp:jcthu/PywukdfjoMZp
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1472	cgsyf.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3936660601-1848837011-2142350499-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\okktddyiir = "C:\\Users\\Admin\\AppData\\Roaming\\jsccxggc\\lluqqajff.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\cgsyf.exe\" "	cgsyf.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4212	1472	WerFault.exe	89

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 1472	2876	2872FBFAF9519BE85B44C6B5E7A5418C.exe	89
PID 2876 wrote to memory of 1472	2876	2872FBFAF9519BE85B44C6B5E7A5418C.exe	89
PID 2876 wrote to memory of 1472	2876	2872FBFAF9519BE85B44C6B5E7A5418C.exe	89
PID 1472 wrote to memory of 1264	1472	cgsyf.exe	93
PID 1472 wrote to memory of 1264	1472	cgsyf.exe	93
PID 1472 wrote to memory of 1264	1472	cgsyf.exe	93

C:\Users\Admin\AppData\Local\Temp\2872FBFAF9519BE85B44C6B5E7A5418C.exe
"C:\Users\Admin\AppData\Local\Temp\2872FBFAF9519BE85B44C6B5E7A5418C.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2876
- C:\Users\Admin\AppData\Local\Temp\cgsyf.exe
  "C:\Users\Admin\AppData\Local\Temp\cgsyf.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1472
- - C:\Users\Admin\AppData\Local\Temp\cgsyf.exe
    "C:\Users\Admin\AppData\Local\Temp\cgsyf.exe"
    3⤵
    PID:1264
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1472 -s 704
    3⤵
    - Program crash
    PID:4212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1472 -ip 1472
1⤵
PID:1492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

cgsyf.exe

Path C:\Users\Admin\AppData\Local\Temp\cgsyf.exe
Size 170KB
SHA256 4f8dc732668833202412ce6f632114b2088dfcc348a04a8453a05753affff71d
MD5 757f19c7408d67f3fb17c67fbf773702
SHA1 34a2b6a796c381b3cefc0f55e0366cdec2fc2300
SHA512 de54eba1ea329553c47504de212282efec0350d24bb8c7e6be05b93f7a2eb148d81e45da2c67ccbe173ad3e203954f9210fc2a26a5df046456be72048cb6bf58
SSDEEP 3072:5fMoZvBTjw/ygEJMC5X9hNciz0QWp+2hCmaZZx04oczJ:5fMoI6BPc7BpLMXoczJ
MD5 SHA1 SHA512 SSDEEP

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cgsyf.exe

Path C:\Users\Admin\AppData\Local\Temp\cgsyf.exe
Size 170KB
SHA256 4f8dc732668833202412ce6f632114b2088dfcc348a04a8453a05753affff71d
MD5 757f19c7408d67f3fb17c67fbf773702
SHA1 34a2b6a796c381b3cefc0f55e0366cdec2fc2300
SHA512 de54eba1ea329553c47504de212282efec0350d24bb8c7e6be05b93f7a2eb148d81e45da2c67ccbe173ad3e203954f9210fc2a26a5df046456be72048cb6bf58
SSDEEP 3072:5fMoZvBTjw/ygEJMC5X9hNciz0QWp+2hCmaZZx04oczJ:5fMoI6BPc7BpLMXoczJ
MD5 SHA1 SHA512 SSDEEP

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hvwlmcro.zs

Path C:\Users\Admin\AppData\Local\Temp\hvwlmcro.zs
Size 118KB
SHA256 8af8d4807eb43879cd825bc77e5881f886862ad934c1b9064867afaaa592e4d3
MD5 3c3e49f871902eaa1e0365f4cdc5d4b9
SHA1 1e3895844b9f49c22c49f15ff6cc99b5a31c9018
SHA512 88e0ca706c7ec11b19d57064f9bda1767bbf80ca0c6915af3ffd13d96b9712395dbf7787bde867499304809448ca7199614ec39d15b39c5790b0e1629a682851
SSDEEP 3072:5ZkCBlgUS6h/z1LRBny0xVg/TZkl+EsjBDGI:Ae9SEVny07QklsX
MD5 SHA1 SHA512 SSDEEP

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memory/1472-5-0x0000000000400000-0x000000000042F000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads