7655628d4cf34b89b3eda96f7cb4ba31489401ca2bf09d60fc5dbf83a30384d0

Analysis

max time kernel
147s
max time network
134s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
12/12/2023, 16:45

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General

Target

tuc3.exe
Size

7.2MB
MD5

f63cf1ea135b2c538962afeb753cd765
SHA1

a882e51f7f5d1c7e3ae4ff175158769be68a280c
SHA256

7655628d4cf34b89b3eda96f7cb4ba31489401ca2bf09d60fc5dbf83a30384d0
SHA512

690d5c46d99be0fdd969026eeaabb4f58058cd4675cdac6fd8a2d1995ff3161c95bb9e93a8c3a2047b76426eeae629a8a0064e0aeee421d8e4a479c987276576
SSDEEP

196608:Dxm50EF70ZaWLZ97vnC8LpS7+bI9cpSzj:JEt0Zak7aIA7kSzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3056	tuc3.tmp
112	numgif.exe
1688	numgif.exe

Loads dropped DLL 6 IoCs

pid	Process
3020	tuc3.exe
3056	tuc3.tmp
3056	tuc3.tmp
3056	tuc3.tmp
3056	tuc3.tmp
3056	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	81.31.197.38

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)\numGIF\bin\x86\is-026U5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-4GB8L.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DND1Q.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-QN9IL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-UGJK1.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-3LD5V.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-D54VC.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-8GBBO.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-FHFG9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RQEE8.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-TB0DV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-D4NGV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DK4RU.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-OVSLC.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-AK6L3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-69KEV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-JNS31.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-D81K7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-BUH13.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-N7DRE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RK3R7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-40TH8.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-JLB20.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-64Q74.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-M9IAL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-VFFPS.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-KGBRF.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\uninstall\is-HU37Q.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-F89E0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-5RSU2.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-UU5KL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-D4RR9.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\numGIF\numgif.exe	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-TMS2B.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-I797S.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-HDSAI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-V8RLB.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-PO3K9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-A7A14.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RQ88G.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-V83VP.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-JQAM0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DADLV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\lessmsi\is-LN6OF.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-VK1KA.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RNQKV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-5FCEA.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\is-4U2A0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-QC27F.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-NGAGI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-140VM.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-69QC5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-MKMLO.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\numGIF\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-RFCL9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-TTK3I.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DBM4R.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-QAV4R.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-TST49.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-0IS1M.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-K5CHS.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RH8ML.tmp	tuc3.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3056	tuc3.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3020 wrote to memory of 3056	3020	tuc3.exe	28
PID 3056 wrote to memory of 1344	3056	tuc3.tmp	29
PID 3056 wrote to memory of 1344	3056	tuc3.tmp	29
PID 3056 wrote to memory of 1344	3056	tuc3.tmp	29
PID 3056 wrote to memory of 1344	3056	tuc3.tmp	29
PID 3056 wrote to memory of 112	3056	tuc3.tmp	31
PID 3056 wrote to memory of 112	3056	tuc3.tmp	31
PID 3056 wrote to memory of 112	3056	tuc3.tmp	31
PID 3056 wrote to memory of 112	3056	tuc3.tmp	31
PID 3056 wrote to memory of 1580	3056	tuc3.tmp	32
PID 3056 wrote to memory of 1580	3056	tuc3.tmp	32
PID 3056 wrote to memory of 1580	3056	tuc3.tmp	32
PID 3056 wrote to memory of 1580	3056	tuc3.tmp	32
PID 3056 wrote to memory of 1688	3056	tuc3.tmp	33
PID 3056 wrote to memory of 1688	3056	tuc3.tmp	33
PID 3056 wrote to memory of 1688	3056	tuc3.tmp	33
PID 3056 wrote to memory of 1688	3056	tuc3.tmp	33
PID 1580 wrote to memory of 772	1580	net.exe	35
PID 1580 wrote to memory of 772	1580	net.exe	35
PID 1580 wrote to memory of 772	1580	net.exe	35
PID 1580 wrote to memory of 772	1580	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:3020
- C:\Users\Admin\AppData\Local\Temp\is-3VTGO.tmp\tuc3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-3VTGO.tmp\tuc3.tmp" /SL5="$4010A,7257737,121856,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:3056
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:1344
- - C:\Program Files (x86)\numGIF\numgif.exe
    "C:\Program Files (x86)\numGIF\numgif.exe" -i
    3⤵
    - Executes dropped EXE
    PID:112
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 12
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 12
      4⤵
      PID:772
- - C:\Program Files (x86)\numGIF\numgif.exe
    "C:\Program Files (x86)\numGIF\numgif.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1688

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

C:\Program Files (x86)\numGIF\numgif.exe

Filesize
1.3MB

MD5
ee6e634024cc873897f286ca2780361a

SHA1
5e5b326a83d29e68f6d1aa4439249aa347c5ef07

SHA256
3b4cc68bebc4cfc6636475a49d46e4e2f7e4a840af1473076a42ddf93fe58303

SHA512
0f64b4a0bbc92aadc4a901ba8d8c80422156d8b98d1e433533a8169273ab55483742f62bcabdc08f45394438c4cff06c09ab00db1fcfa1f3d590ad5414745fec

Download Submit
\Program Files (x86)\numGIF\numgif.exe

Filesize
2.1MB

MD5
57ced71d2e317eabb615aa41744d1b1f

SHA1
6cc65d30c5fd466c87947a037b4b334150cd07c6

SHA256
063e3ba1e7b81c595bcda4226b7258730c769626de660452e5aefc7f0ad45737

SHA512
2c76683fcacdbe5497fd042424f1ac4da0cd74f62f0516e1bc77487bce7fed98b21836582e6ed8eee157bf854bc550dec6e4697919cd21adf76ae400fcb98662

Download Submit
\Users\Admin\AppData\Local\Temp\is-0T681.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-0T681.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-0T681.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-3VTGO.tmp\tuc3.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
memory/112-154-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/112-158-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/112-156-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/112-153-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-166-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-195-0x0000000002640000-0x00000000026DE000-memory.dmp

Filesize
632KB

Download
memory/1688-212-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-160-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-162-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-209-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-205-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-202-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-199-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-169-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-170-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-173-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-174-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-177-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-180-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-183-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-184-0x0000000002640000-0x00000000026DE000-memory.dmp

Filesize
632KB

Download
memory/1688-189-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-192-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/1688-196-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/3020-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3020-163-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/3056-151-0x00000000034C0000-0x00000000036E9000-memory.dmp

Filesize
2.2MB

Download
memory/3056-165-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3056-164-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/3056-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download