76db0626059e4745a94ddb33f09bc62b213dd2c4b217887de9a19283f3224ec5

Analysis

max time kernel
150s
max time network
135s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
11-12-2023 15:23

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General

Target

tuc6.exe
Size

6.9MB
MD5

d29f22632bfd0db3fc465861f2791bdf
SHA1

4da8ce4d66b1a02a905766ea3cb758e5e9616a7c
SHA256

76db0626059e4745a94ddb33f09bc62b213dd2c4b217887de9a19283f3224ec5
SHA512

98b0d7cdcb5b8c646a3eb5da9e63f232544d780d8f39ff87056da2a5499868a0dcb8d4b0ca37aabf749a1c6e6d1244d05e132454a37e9f4f6c293cb2330e992e
SSDEEP

196608:pbw61woT7mRIc+DaTblZEZTXuNkrAk8TQNY0pzj:pbw61woTCR9+OTbl0Zo/Gzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2972	tuc6.tmp
2480	wmaconvert.exe
1044	wmaconvert.exe

Loads dropped DLL 6 IoCs

pid	Process
1280	tuc6.exe
2972	tuc6.tmp
2972	tuc6.tmp
2972	tuc6.tmp
2972	tuc6.tmp
2972	tuc6.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	45.155.250.90

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 63 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-SDDID.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-TEJIV.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-OFEF9.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-UE98R.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-A1IVB.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-D1AI0.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-PCGHC.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\is-UIL6B.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-UHJV8.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-6MTKO.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-B4EOJ.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-5SAQE.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\lessmsi\is-HS963.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-N7RE7.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9JQR7.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-TKPPA.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-A608R.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-BFTFC.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-O120M.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-EC5DI.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-PDEBF.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-NTNR7.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-8OEB8.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-BC8CD.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-4LEQU.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-DKSA6.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-VEAS4.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q7C0C.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-I544F.tmp	tuc6.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\wmaconvert.exe	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-T95H0.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-6RBQ8.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q4E6N.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-1V35O.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-S9K8V.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-K2ETR.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-HACDR.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-96OMQ.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-N3R0K.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-FK6I3.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-3E22I.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\is-NA7F2.tmp	tuc6.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-BEHI9.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-N8T5A.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-5F4P4.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-2O0V2.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-8S19M.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-NFBFB.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-1HFV7.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-8450T.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-7GI4S.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-HDN2K.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-TAJ5O.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9RUT9.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-QJVP7.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-TMRSP.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9JIG4.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GLFFK.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-K3KGS.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-MO4PA.tmp	tuc6.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-UO9BJ.tmp	tuc6.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2972	tuc6.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 1280 wrote to memory of 2972	1280	tuc6.exe	28
PID 2972 wrote to memory of 996	2972	tuc6.tmp	29
PID 2972 wrote to memory of 996	2972	tuc6.tmp	29
PID 2972 wrote to memory of 996	2972	tuc6.tmp	29
PID 2972 wrote to memory of 996	2972	tuc6.tmp	29
PID 2972 wrote to memory of 2480	2972	tuc6.tmp	31
PID 2972 wrote to memory of 2480	2972	tuc6.tmp	31
PID 2972 wrote to memory of 2480	2972	tuc6.tmp	31
PID 2972 wrote to memory of 2480	2972	tuc6.tmp	31
PID 2972 wrote to memory of 1568	2972	tuc6.tmp	34
PID 2972 wrote to memory of 1568	2972	tuc6.tmp	34
PID 2972 wrote to memory of 1568	2972	tuc6.tmp	34
PID 2972 wrote to memory of 1568	2972	tuc6.tmp	34
PID 2972 wrote to memory of 1044	2972	tuc6.tmp	33
PID 2972 wrote to memory of 1044	2972	tuc6.tmp	33
PID 2972 wrote to memory of 1044	2972	tuc6.tmp	33
PID 2972 wrote to memory of 1044	2972	tuc6.tmp	33
PID 1568 wrote to memory of 1304	1568	net.exe	35
PID 1568 wrote to memory of 1304	1568	net.exe	35
PID 1568 wrote to memory of 1304	1568	net.exe	35
PID 1568 wrote to memory of 1304	1568	net.exe	35

C:\Users\Admin\AppData\Local\Temp\tuc6.exe
"C:\Users\Admin\AppData\Local\Temp\tuc6.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1280
- C:\Users\Admin\AppData\Local\Temp\is-EUSHG.tmp\tuc6.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-EUSHG.tmp\tuc6.tmp" /SL5="$70120,6958728,68096,C:\Users\Admin\AppData\Local\Temp\tuc6.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2972
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:996
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2480
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1044
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 11
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1568
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 11
      4⤵
      PID:1304

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Program Files (x86)\ConvertWMA\wmaconvert.exe

Filesize
1.8MB

MD5
3a37f2b617ec8d6d2806d3fd94292c8d

SHA1
1a828850d72c3486a4aa30d9556941ec90f42536

SHA256
e26ce90a7a3266084baf1a9d617bbddfe6acec4d086d9be047daa0afb8d2726d

SHA512
2edd47804a5e393352aea25c91862823a99f756c7b1b2b5233e320279946ede8c2f74e05c08ca994cbc346115a1a5e980e2c968a9a52877fe0c281bf286530ca

Download Submit
\Users\Admin\AppData\Local\Temp\is-9RSO9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-9RSO9.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-9RSO9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-EUSHG.tmp\tuc6.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
memory/1044-174-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-197-0x00000000025E0000-0x000000000267E000-memory.dmp

Filesize
632KB

Download
memory/1044-211-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-207-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-185-0x00000000025E0000-0x000000000267E000-memory.dmp

Filesize
632KB

Download
memory/1044-204-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-160-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-201-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-162-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-186-0x00000000025E0000-0x000000000267E000-memory.dmp

Filesize
632KB

Download
memory/1044-198-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-214-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-166-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-194-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-170-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-171-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-191-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-175-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-178-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-181-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1044-184-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1280-163-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/1280-1-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2480-154-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2480-158-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2480-157-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2480-153-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2972-167-0x00000000034F0000-0x00000000036BF000-memory.dmp

Filesize
1.8MB

Download
memory/2972-165-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2972-164-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2972-151-0x00000000034F0000-0x00000000036BF000-memory.dmp

Filesize
1.8MB

Download
memory/2972-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download