Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
08/07/2026, 18:11
Behavioral task
behavioral1
Sample
yanhh3d.exe
Resource
win10v2004-20260513-en
7 signatures
150 seconds
General
- Target yanhh3d.exe
- Size 3.1MB
- Sample260708-wstbrset2j
- SHA256 e3a5b3ac1e634bccd338c55b0b7f14ac97604800ce02e6ae8618f770ef990eae
- MD5 d0c7f529dab7756cd3fba3d8efb44d69
- SHA1 4a3b3eb49b42c288b06f095bc1ea994ecbd951ac
- SHA512 ac90eb67470166e53cb7b6937507c97defee2be3fa9ac9d759c014aa61cef800d37fea9c1c4577be0a3bd16f570037d273c9cf5d0a38bda0f36b0824397a204f
- SSDEEP 49152:3vyvE2H5aweBHPbl6T/yGaqA6/NtW6SBxQ7oGdXx3THHB72eh2NT:3vYE2H5aweBHPbl6T/DaqA6/q65n
- TLSH T1CAE56B0437F85E33E56BD2B3D5B05026A3F0E82AF363EB1B119167BE1C53B5488426A7
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
yanhh3d
C2
-
172.67.161.129:4782
-
yanhh3d.ee:4782
-
104.21.66.157:4782
-
104.21.66.157:443
-
yanhh3d.ee:443
-
172.67.161.129:443
Mutex
-
bab58c9b-1138-4a66-89ea-095d3b87264d
Attributes
-
encryption_key
FAA6DCCCB5AA917EA4E50E1D9897AB35BE84AF27
-
install_name
yanhh3d.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar payload 2 IoCs
resource yara_rule behavioral1/memory/4640-0-0x0000000000C50000-0x0000000000F74000-memory.dmp family_quasar behavioral1/files/0x000700000002420f-5.dat family_quasar - Executes dropped EXE 1 IoCs
pid Process 4812 yanhh3d.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 4640 yanhh3d.exe Token: SeDebugPrivilege 4812 yanhh3d.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4812 yanhh3d.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4812 yanhh3d.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4640 wrote to memory of 4812 4640 yanhh3d.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\yanhh3d.exe"C:\Users\Admin\AppData\Local\Temp\yanhh3d.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4640 -
C:\Users\Admin\AppData\Roaming\SubDir\yanhh3d.exe"C:\Users\Admin\AppData\Roaming\SubDir\yanhh3d.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4812
-
Network
MITRE ATT&CK Matrix
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\yanhh3d.exe.log
- Size 1KB
- SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
- MD5 baf55b95da4a601229647f25dad12878
- SHA1 abc16954ebfd213733c4493fc1910164d825cac8
- SHA512 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545
- TLSH T1B521CD712376B1D889163F422C5D2A8007BF0335BA50DE1CB9A9725ED9260171F222F3
- MD5 SHA1 SHA512 TLSH
- Path C:\Users\Admin\AppData\Roaming\SubDir\yanhh3d.exe
- Size 3.1MB
- SHA256 e3a5b3ac1e634bccd338c55b0b7f14ac97604800ce02e6ae8618f770ef990eae
- MD5 d0c7f529dab7756cd3fba3d8efb44d69
- SHA1 4a3b3eb49b42c288b06f095bc1ea994ecbd951ac
- SHA512 ac90eb67470166e53cb7b6937507c97defee2be3fa9ac9d759c014aa61cef800d37fea9c1c4577be0a3bd16f570037d273c9cf5d0a38bda0f36b0824397a204f
- SSDEEP 49152:3vyvE2H5aweBHPbl6T/yGaqA6/NtW6SBxQ7oGdXx3THHB72eh2NT:3vYE2H5aweBHPbl6T/DaqA6/q65n
- TLSH T1CAE56B0437F85E33E56BD2B3D5B05026A3F0E82AF363EB1B119167BE1C53B5488426A7
- MD5 SHA1 SHA512 SSDEEP TLSH