18c8f9503479bd3fb4b9c6d6883cf8fcf2c3275bbce7321c66717ca27008a971

Analysis

max time kernel
145s
max time network
131s
platform
windows7_x64
resource
win7-20231201-en
resource tags

arch:x64arch:x86image:win7-20231201-enlocale:en-usos:windows7-x64system
submitted
10/12/2023, 18:08

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General

Target

tuc5.exe
Size

6.9MB
MD5

01f13e6be387d15972a6500416446d80
SHA1

6a3b67716c4f8021369d37580d858d0dec148417
SHA256

18c8f9503479bd3fb4b9c6d6883cf8fcf2c3275bbce7321c66717ca27008a971
SHA512

7be584860e08615137ea15c1e01d57a35caa9dd18dfc4609e19254d38501aef873e2d946b8e72b5848c91ce1da6b585cea6f37e4c671a2b2a28c6beb872fb391
SSDEEP

196608:txnTNzjsOzc7TGHscDgcXbIdslX38dgFYJzj:TNztzQlcDPXus98d9Jzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2776	tuc5.tmp
1556	crtgame.exe
2524	crtgame.exe

Loads dropped DLL 6 IoCs

pid	Process
2676	tuc5.exe
2776	tuc5.tmp
2776	tuc5.tmp
2776	tuc5.tmp
2776	tuc5.tmp
2776	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)\CRTGame\bin\x86\is-I8EOO.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-H9DGF.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ACHOC.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\lessmsi\is-2RK3B.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ASU3T.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-NP7BN.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-IKSFK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-SBSF4.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-PP9NA.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-0AHB9.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\plugins\internal\is-P4UIM.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-AVMRE.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-H65HI.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-O19PU.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-OD0HQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-8480O.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-GU1RE.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-1DE5F.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-1AF3V.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-J33QB.tmp	tuc5.tmp
File opened for modification	C:\Program Files (x86)\CRTGame\crtgame.exe	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-8UH3H.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-6SMHL.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-B94S1.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-CPFU4.tmp	tuc5.tmp
File opened for modification	C:\Program Files (x86)\CRTGame\uninstall\unins000.dat	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-7UQJQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-R7BTJ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-76HFU.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-QRMOK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-V1FU2.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-VB04G.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-U332B.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-0IF3G.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-K383S.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-T5RUQ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-200E1.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\plugins\internal\is-6MDGJ.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-OMCRS.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-729GB.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-BQAPU.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-PGULA.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-VIBJ2.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-IC5TK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-BFNQK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-7RFHK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-B56RU.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-UEGG1.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-3P1FN.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-I6VLA.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\is-830TP.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-2JKIK.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\uninstall\is-BARR3.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-V59U2.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-QF0TA.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ERNMT.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-H7DKV.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-LRQSO.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\uninstall\unins000.dat	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-E616U.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-RUBS8.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-7UO5G.tmp	tuc5.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-5GPG6.tmp	tuc5.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2776	tuc5.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2676 wrote to memory of 2776	2676	tuc5.exe	28
PID 2776 wrote to memory of 2500	2776	tuc5.tmp	29
PID 2776 wrote to memory of 2500	2776	tuc5.tmp	29
PID 2776 wrote to memory of 2500	2776	tuc5.tmp	29
PID 2776 wrote to memory of 2500	2776	tuc5.tmp	29
PID 2776 wrote to memory of 1556	2776	tuc5.tmp	31
PID 2776 wrote to memory of 1556	2776	tuc5.tmp	31
PID 2776 wrote to memory of 1556	2776	tuc5.tmp	31
PID 2776 wrote to memory of 1556	2776	tuc5.tmp	31
PID 2776 wrote to memory of 1240	2776	tuc5.tmp	34
PID 2776 wrote to memory of 1240	2776	tuc5.tmp	34
PID 2776 wrote to memory of 1240	2776	tuc5.tmp	34
PID 2776 wrote to memory of 1240	2776	tuc5.tmp	34
PID 2776 wrote to memory of 2524	2776	tuc5.tmp	33
PID 2776 wrote to memory of 2524	2776	tuc5.tmp	33
PID 2776 wrote to memory of 2524	2776	tuc5.tmp	33
PID 2776 wrote to memory of 2524	2776	tuc5.tmp	33
PID 1240 wrote to memory of 1156	1240	net.exe	35
PID 1240 wrote to memory of 1156	1240	net.exe	35
PID 1240 wrote to memory of 1156	1240	net.exe	35
PID 1240 wrote to memory of 1156	1240	net.exe	35

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:2676
- C:\Users\Admin\AppData\Local\Temp\is-6FONS.tmp\tuc5.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-6FONS.tmp\tuc5.tmp" /SL5="$400E0,7025884,54272,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:2776
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:2500
- - C:\Program Files (x86)\CRTGame\crtgame.exe
    "C:\Program Files (x86)\CRTGame\crtgame.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1556
- - C:\Program Files (x86)\CRTGame\crtgame.exe
    "C:\Program Files (x86)\CRTGame\crtgame.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2524
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 10
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1240
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 10
      4⤵
      PID:1156

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)\CRTGame\crtgame.exe

Filesize
182KB

MD5
4cc44dd504298a73d4db311a7976cc27

SHA1
6af8ad5892f73e4288f86ffadc5d09b86b51ad9e

SHA256
04b7dfe844e2d8c167c613f0068de5e5fb29c8abe12423a151ba51f697f8230f

SHA512
15b073e50a367ec6ec384fb075309951522f8c32e5cda72495fb3d2cc4da2bfd5eaaba3cdf26ca3b9dbe0a0296e721b0062cf21ca570055b4648555ff4c5acdf

Download Submit
C:\Program Files (x86)\CRTGame\crtgame.exe

Filesize
242KB

MD5
853f4a76242150a5bd9e9a57f4c3803a

SHA1
27d5f13d3037aceb94babd9c0d4ee7c90eb56866

SHA256
09eaffa63cc76963e89f6d42b9530043cf2d60c9d75fa317a28d43bd564b27dc

SHA512
b494bd8b11b9f245f6bdb016b7b1a7b7a9a6dea37f40be69579f35ee29663c98f6afbaefb2e1c0bbde743d9c6dccaec4e5cc6c198b55c012c6f6d2ffa3be5e2e

Download Submit
\Program Files (x86)\CRTGame\crtgame.exe

Filesize
2.1MB

MD5
3362bac458070e33d0cabcda1e4b735c

SHA1
76ac1f5b96667d9621eedd92ab0704b9c7a129b0

SHA256
4dbfd9df16a57d8ff7a00a378fe737efc179f53f2ce975daeaedbaa6ab8bcecd

SHA512
59ed8a9d16e100ad91d98ad3a08eabe148234633e59bfb4bef1b63e5a54c3e63193f088ad1538c4898a7a6ac5ead65a2e244ae64bc5325bbf87e763474c5a5ce

Download Submit
\Users\Admin\AppData\Local\Temp\is-6FONS.tmp\tuc5.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
\Users\Admin\AppData\Local\Temp\is-RVAT9.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-RVAT9.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-RVAT9.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1556-156-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/1556-158-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/1556-153-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/1556-154-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-183-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-190-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-213-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-160-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-210-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-162-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-206-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-203-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-165-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-200-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-197-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-170-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-171-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-174-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-177-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-180-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2524-194-0x0000000002A30000-0x0000000002AD2000-memory.dmp

Filesize
648KB

Download
memory/2524-184-0x0000000002A30000-0x0000000002AD2000-memory.dmp

Filesize
648KB

Download
memory/2524-187-0x0000000002A30000-0x0000000002AD2000-memory.dmp

Filesize
648KB

Download
memory/2524-193-0x0000000000400000-0x000000000061E000-memory.dmp

Filesize
2.1MB

Download
memory/2676-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2676-163-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2676-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2776-151-0x00000000037E0000-0x00000000039FE000-memory.dmp

Filesize
2.1MB

Download
memory/2776-167-0x00000000037E0000-0x00000000039FE000-memory.dmp

Filesize
2.1MB

Download
memory/2776-166-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2776-164-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2776-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download