29ed940246ee61d66cbd802948afef91ab834fdd26ad5fee2053a03b88e906bf

Analysis

max time kernel
147s
max time network
137s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
11-12-2023 14:16

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General

Target

tuc5.exe
Size

6.9MB
MD5

a866cc0261f030fd6476dcda19b196b6
SHA1

21b33c142f70c5a74cf03f0555078e5996e565e2
SHA256

29ed940246ee61d66cbd802948afef91ab834fdd26ad5fee2053a03b88e906bf
SHA512

81ed4d34e8dffbac5d5232bbd27361b5933a4c66b4854619e03bf11ce2f1d6e69f89df2c1be68445887eca82d881bae7dc897f5b3daf4155dad8357a08c2b54b
SSDEEP

196608:RxOlhkHxfDumIwWJfU1IzKkGjAqiuGIqOg9zj:6jkHxfKTnJjzKkRtF9zj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2340	tuc5.tmp
2400	wmaconvert.exe
1956	wmaconvert.exe

Loads dropped DLL 6 IoCs

pid	Process
2004	tuc5.exe
2340	tuc5.tmp
2340	tuc5.tmp
2340	tuc5.tmp
2340	tuc5.tmp
2340	tuc5.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-ECP8T.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-K6TP0.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-EES5B.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-7PVQ9.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-JN1E9.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-LTLGG.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-8CRV6.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-MR1SL.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-517JQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-2U7MD.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-KIET1.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-1GF9A.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-VP6PH.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\is-J0UTD.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-6RKSL.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-B9IPM.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-D2QJO.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-30VA5.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-EAJN6.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-3QIR0.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-EK6JK.tmp	tuc5.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\wmaconvert.exe	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9V94L.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-UNPRM.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9FCQQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-I33B6.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9QO57.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-ISBVJ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-I4OAE.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-KDLKH.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-OBVOS.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-3L6M3.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-99421.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-5O7R5.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-6CF1D.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-D1FDH.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\is-AU9SE.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-K74IH.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-JOPE7.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-724H4.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-CNIM2.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\lessmsi\is-7CC4T.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-26G6H.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-6V4NR.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-3MOQ0.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-H62NG.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-TU6IM.tmp	tuc5.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-3EJ4B.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-1A8UM.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q0FJI.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-71DST.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9JSE0.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-CIQG1.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-V7LPQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-H6FUK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-FGN4A.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-UUNVK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-MR1AE.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-V0F37.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-URLHP.tmp	tuc5.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-8DKMC.tmp	tuc5.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2340	tuc5.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2004 wrote to memory of 2340	2004	tuc5.exe	28
PID 2340 wrote to memory of 2908	2340	tuc5.tmp	29
PID 2340 wrote to memory of 2908	2340	tuc5.tmp	29
PID 2340 wrote to memory of 2908	2340	tuc5.tmp	29
PID 2340 wrote to memory of 2908	2340	tuc5.tmp	29
PID 2340 wrote to memory of 2400	2340	tuc5.tmp	31
PID 2340 wrote to memory of 2400	2340	tuc5.tmp	31
PID 2340 wrote to memory of 2400	2340	tuc5.tmp	31
PID 2340 wrote to memory of 2400	2340	tuc5.tmp	31
PID 2340 wrote to memory of 1672	2340	tuc5.tmp	35
PID 2340 wrote to memory of 1672	2340	tuc5.tmp	35
PID 2340 wrote to memory of 1672	2340	tuc5.tmp	35
PID 2340 wrote to memory of 1672	2340	tuc5.tmp	35
PID 2340 wrote to memory of 1956	2340	tuc5.tmp	33
PID 2340 wrote to memory of 1956	2340	tuc5.tmp	33
PID 2340 wrote to memory of 1956	2340	tuc5.tmp	33
PID 2340 wrote to memory of 1956	2340	tuc5.tmp	33
PID 1672 wrote to memory of 2408	1672	net.exe	34
PID 1672 wrote to memory of 2408	1672	net.exe	34
PID 1672 wrote to memory of 2408	1672	net.exe	34
PID 1672 wrote to memory of 2408	1672	net.exe	34

C:\Users\Admin\AppData\Local\Temp\tuc5.exe
"C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2004
- C:\Users\Admin\AppData\Local\Temp\is-MRIIJ.tmp\tuc5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-MRIIJ.tmp\tuc5.tmp" /SL5="$70120,6950053,68096,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:2908
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2400
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1956
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 11
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1672

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 helpmsg 11
1⤵
PID:2408

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
31a67cb10577d20a96937eec6a9b99bd

SHA1
a861888ce00888370a85dc2c7925fb4178aa7a2c

SHA256
3db1a59d28b184bacc5ac11a362e5c5293118f5bc7948d51def377474def7ff4

SHA512
0ca7b34bdee6a0a12feed7be7bf11cca882233353ae382d221a856007d3a396e73d95f230eab7fb2e1e4e361caee8c6b09cf9a3dd5007b732869f8f63f2b8839

Download Submit
\Users\Admin\AppData\Local\Temp\is-5MVMB.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-5MVMB.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-5MVMB.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-MRIIJ.tmp\tuc5.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
memory/1956-190-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-193-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-213-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-210-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-206-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-203-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-159-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-161-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-200-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-197-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-196-0x00000000025F0000-0x000000000268E000-memory.dmp

Filesize
632KB

Download
memory/1956-184-0x00000000025F0000-0x000000000268E000-memory.dmp

Filesize
632KB

Download
memory/1956-166-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-169-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-170-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-173-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-174-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-177-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-180-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-183-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1956-185-0x00000000025F0000-0x000000000268E000-memory.dmp

Filesize
632KB

Download
memory/2004-162-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2004-1-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2340-165-0x00000000035A0000-0x000000000376F000-memory.dmp

Filesize
1.8MB

Download
memory/2340-164-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2340-163-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2340-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2340-151-0x00000000035A0000-0x000000000376F000-memory.dmp

Filesize
1.8MB

Download
memory/2400-157-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2400-153-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/2400-154-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download