255a91008e15d30f793d4b09e65632fee920a16e7de4619d13cc201ee7e214d4

Analysis

max time kernel
147s
max time network
136s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
11/12/2023, 14:03

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General

Target

tuc3.exe
Size

6.9MB
MD5

069e09a6b9817ecb72b5074d89570424
SHA1

ba335be5158df5ffbead191da10f1a05e196ba54
SHA256

255a91008e15d30f793d4b09e65632fee920a16e7de4619d13cc201ee7e214d4
SHA512

036d54781efea58dd871b07828fa0fc2cb360c6791ca3add171b5d9b95119820e8d692c78092cbe67192e6b1549437102d86eeeb76d4fe6be5baf166cb9fbf22
SSDEEP

196608:4W0fKLtr95HARqIrmVY8S50UL8Kj8yTwHvWY3Nzj:4tO/hAPmVNyEWeNzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3048	tuc3.tmp
1256	wmaconvert.exe
1696	wmaconvert.exe

Loads dropped DLL 6 IoCs

pid	Process
2932	tuc3.exe
3048	tuc3.tmp
3048	tuc3.tmp
3048	tuc3.tmp
3048	tuc3.tmp
3048	tuc3.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	152.89.198.214

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-0N1FM.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-R7T7U.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-K6V98.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-2QRDJ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-SPPI1.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-468K5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-JF3OI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-3BUO2.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-NRMFH.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-0FV2A.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-MAII6.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-ITKND.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-RTOFA.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-IBFF5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-7ST2H.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-BG7BD.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-F59L3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-NGS6L.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-A7N77.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-QAM4E.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\lessmsi\is-UTFV3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-4OSH7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-KU7DP.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-3GU71.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\wmaconvert.exe	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-14A33.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-U5VHG.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-MTEHN.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GEKKE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-VMO33.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GFH4V.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-PNA6K.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GDO6C.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-RQE0A.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-148Q7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GA7LL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\stuff\is-5573O.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-98ANU.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q68N9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-ATC51.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-V18DV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-H94IN.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-78T1J.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-DA1PS.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-9UINI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q7BBQ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-GRAJU.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-QI4KV.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\uninstall\is-U09LM.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-4HAGL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-LUV0K.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-4VHBN.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-N0PIE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-QQTM0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-746F1.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-2NS5D.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-N4D5J.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-264DI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-R9Q54.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\bin\x86\is-LH6FS.tmp	tuc3.tmp
File created	C:\Program Files (x86)\ConvertWMA\is-7LC79.tmp	tuc3.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3048	tuc3.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 2932 wrote to memory of 3048	2932	tuc3.exe	28
PID 3048 wrote to memory of 2232	3048	tuc3.tmp	29
PID 3048 wrote to memory of 2232	3048	tuc3.tmp	29
PID 3048 wrote to memory of 2232	3048	tuc3.tmp	29
PID 3048 wrote to memory of 2232	3048	tuc3.tmp	29
PID 3048 wrote to memory of 1256	3048	tuc3.tmp	31
PID 3048 wrote to memory of 1256	3048	tuc3.tmp	31
PID 3048 wrote to memory of 1256	3048	tuc3.tmp	31
PID 3048 wrote to memory of 1256	3048	tuc3.tmp	31
PID 3048 wrote to memory of 2152	3048	tuc3.tmp	32
PID 3048 wrote to memory of 2152	3048	tuc3.tmp	32
PID 3048 wrote to memory of 2152	3048	tuc3.tmp	32
PID 3048 wrote to memory of 2152	3048	tuc3.tmp	32
PID 3048 wrote to memory of 1696	3048	tuc3.tmp	33
PID 3048 wrote to memory of 1696	3048	tuc3.tmp	33
PID 3048 wrote to memory of 1696	3048	tuc3.tmp	33
PID 3048 wrote to memory of 1696	3048	tuc3.tmp	33
PID 2152 wrote to memory of 1556	2152	net.exe	35
PID 2152 wrote to memory of 1556	2152	net.exe	35
PID 2152 wrote to memory of 1556	2152	net.exe	35
PID 2152 wrote to memory of 1556	2152	net.exe	35

C:\Users\Admin\AppData\Local\Temp\tuc3.exe
"C:\Users\Admin\AppData\Local\Temp\tuc3.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Users\Admin\AppData\Local\Temp\is-7VQNR.tmp\tuc3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-7VQNR.tmp\tuc3.tmp" /SL5="$70122,6973457,68096,C:\Users\Admin\AppData\Local\Temp\tuc3.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:2232
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1256
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 11
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2152
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 11
      4⤵
      PID:1556
- - C:\Program Files (x86)\ConvertWMA\wmaconvert.exe
    "C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1696

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
11793f6b69b2df9823a26f0356c191da

SHA1
ee7d551f6bcdd993f338a73fbef8e4f2a7e072fd

SHA256
ee80b4359afed08948ef90984bb846e18ef2ba254253322d6a7d64b60654fb3a

SHA512
c482e23f88615c1ca6b44a097c909ccf763f1158c9bd1a8689c1a6590cbc2717f3dd0173a14b582076fe57d00ab50e900caae650a0f6f90d917215a843473b3d

Download Submit
\Users\Admin\AppData\Local\Temp\is-7VQNR.tmp\tuc3.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
\Users\Admin\AppData\Local\Temp\is-MR7RJ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-MR7RJ.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-MR7RJ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1256-153-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1256-157-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1256-154-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1256-152-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-166-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-193-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-213-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-159-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-161-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-210-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-206-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-203-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-200-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-197-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-169-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-170-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-173-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-174-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-177-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-180-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-183-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-185-0x00000000026B0000-0x000000000274E000-memory.dmp

Filesize
632KB

Download
memory/1696-190-0x0000000000400000-0x00000000005CF000-memory.dmp

Filesize
1.8MB

Download
memory/1696-196-0x00000000026B0000-0x000000000274E000-memory.dmp

Filesize
632KB

Download
memory/2932-0-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/2932-162-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/3048-150-0x00000000034D0000-0x000000000369F000-memory.dmp

Filesize
1.8MB

Download
memory/3048-165-0x00000000034D0000-0x000000000369F000-memory.dmp

Filesize
1.8MB

Download
memory/3048-164-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3048-163-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3048-7-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download