cb44f05880b1d5f7dec6ee9cf3cd0f2b6d93dcadccd0f1f424cf8f1831bc01bd

Analysis

max time kernel
148s
max time network
136s
platform
windows7_x64
resource
win7-20231023-en
resource tags

arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
submitted
10/12/2023, 17:23

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General

Target

tuc3.exe
Size

6.9MB
MD5

1b379cfaf7adff42f826f11fb36af8d8
SHA1

4ddddceeb948acf2747a817bfb54e5995347416f
SHA256

cb44f05880b1d5f7dec6ee9cf3cd0f2b6d93dcadccd0f1f424cf8f1831bc01bd
SHA512

10c294a9212c5c4f0580d5e0974fe620b3f17b5789ad6699593859788b24a405c4ce19477e53c0fcf544486daa038436f9d436e9d6cea45765bb35122ee1625e
SSDEEP

196608:9K2+nNevvWstwr2m5BmycyEbSfasepd5e4x6+AjZ6mjxzj:9DY6tiP3myRfzepXe4ny8gxzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
2580	tuc3.tmp
1308	crtgame.exe
1336	crtgame.exe

Loads dropped DLL 6 IoCs

pid	Process
1384	tuc3.exe
2580	tuc3.tmp
2580	tuc3.tmp
2580	tuc3.tmp
2580	tuc3.tmp
2580	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)\CRTGame\bin\x86\is-4BSCP.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\uninstall\is-GVFN8.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-CS9RG.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-K3D8U.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-354IG.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-L1IOA.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-5TM8F.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ATGS5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\is-L6GFM.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\CRTGame\crtgame.exe	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-JD1E7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-7UFE2.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ITDPF.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\plugins\internal\is-BMFJO.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-2JI01.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-G2HE3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-JHJGT.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-6EQ3N.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-UVGGK.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-I6EV7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-D055U.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ISLFV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-5063A.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\lessmsi\is-5F93D.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-G5BCJ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-50MKM.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-N2GHB.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-QVSQ0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-NNIP7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-60M23.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-AO95Q.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-PJQO0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-AQVCK.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-V7K7Q.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-P44SL.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\CRTGame\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-DRFK6.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\plugins\internal\is-NJD26.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\stuff\is-FN5M0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-1MQQ0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-7JFK5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-PSVKT.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-Q3TFI.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-63QRL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-B4VMV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-6B3MG.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-KVS6U.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-KJS9M.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-Q3SQN.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-Q2FHE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-7SHD7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-2I39E.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-V5D76.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-F527E.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-SC5JV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-SI0IG.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-6701Q.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-KO2T7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-UCRI5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-055PQ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-ADLF7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\CRTGame\bin\x86\is-3G4TT.tmp	tuc3.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2580	tuc3.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 1384 wrote to memory of 2580	1384	tuc3.exe	28
PID 2580 wrote to memory of 2016	2580	tuc3.tmp	29
PID 2580 wrote to memory of 2016	2580	tuc3.tmp	29
PID 2580 wrote to memory of 2016	2580	tuc3.tmp	29
PID 2580 wrote to memory of 2016	2580	tuc3.tmp	29
PID 2580 wrote to memory of 1308	2580	tuc3.tmp	31
PID 2580 wrote to memory of 1308	2580	tuc3.tmp	31
PID 2580 wrote to memory of 1308	2580	tuc3.tmp	31
PID 2580 wrote to memory of 1308	2580	tuc3.tmp	31
PID 2580 wrote to memory of 844	2580	tuc3.tmp	32
PID 2580 wrote to memory of 844	2580	tuc3.tmp	32
PID 2580 wrote to memory of 844	2580	tuc3.tmp	32
PID 2580 wrote to memory of 844	2580	tuc3.tmp	32
PID 2580 wrote to memory of 1336	2580	tuc3.tmp	35
PID 2580 wrote to memory of 1336	2580	tuc3.tmp	35
PID 2580 wrote to memory of 1336	2580	tuc3.tmp	35
PID 2580 wrote to memory of 1336	2580	tuc3.tmp	35
PID 844 wrote to memory of 1112	844	net.exe	33
PID 844 wrote to memory of 1112	844	net.exe	33
PID 844 wrote to memory of 1112	844	net.exe	33
PID 844 wrote to memory of 1112	844	net.exe	33

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:1384
- C:\Users\Admin\AppData\Local\Temp\is-EVNP0.tmp\tuc3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-EVNP0.tmp\tuc3.tmp" /SL5="$4010A,6991381,54272,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:2580
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:2016
- - C:\Program Files (x86)\CRTGame\crtgame.exe
    "C:\Program Files (x86)\CRTGame\crtgame.exe" -i
    3⤵
    - Executes dropped EXE
    PID:1308
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 10
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:844
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 10
      4⤵
      PID:1112
- - C:\Program Files (x86)\CRTGame\crtgame.exe
    "C:\Program Files (x86)\CRTGame\crtgame.exe" -s
    3⤵
    - Executes dropped EXE
    PID:1336

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
313KB

MD5
606807782bd866e2a5038492dc388dce

SHA1
08fd2bfb9dde4a41474f61b86065350c7a7b6121

SHA256
ca957523070a54d4b323a7bfade205fff80edf694809a488f64186e97688429a

SHA512
d8f8accbbfd06de9420d7c4072b15e510a1df741f6c8f9c9a210279c374c213582d6245052a8d529fc5b3928530c44a9d2d862a13ef5a15143f4ee4b1371542c

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

Filesize
1.2MB

MD5
b2531fb9a617f8991026fc7b4d7c4d3f

SHA1
e483dcf00406b8fc4860b48f029c466ddac034fe

SHA256
daaa9eba0f21bb553cfe10015ba843841e19d5546c17e4d75ad96d32aa978317

SHA512
7c01417da5e6753159ee607d1bbada4b74010acc7cc8215ce9493488356ea3d10016e8f1b845b7a46945183bf0fca2e70f5f934baab1fc67ec874e4ed18e3c88

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

Filesize
2.1MB

MD5
bb0124f16d88c4ec1fcfd9e524a5b921

SHA1
5017dc7277dbc5bb0b6f8428e4ff72603e3a370b

SHA256
59495c6e79c301f767f3d336050fb9927826f0ae972d634d395f5b44d7280a09

SHA512
4be3e838fb41cd4d01a12b639cdcb93df94deec0debd2593c53bbfe977daf5bcb9e3f97f6c47d33e76aea12ae2f9224f27652dfb5b5a69f53d201184766fff91

Download Submit
\Users\Admin\AppData\Local\Temp\is-EVNP0.tmp\tuc3.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
\Users\Admin\AppData\Local\Temp\is-R38K2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-R38K2.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-R38K2.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
memory/1308-158-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1308-153-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1308-154-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1308-157-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-165-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-191-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-214-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-160-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-162-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-211-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-207-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-204-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-201-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-198-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-170-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-171-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-174-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-175-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-178-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-181-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-184-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1336-186-0x0000000002570000-0x0000000002612000-memory.dmp

Filesize
648KB

Download
memory/1336-185-0x0000000002570000-0x0000000002612000-memory.dmp

Filesize
648KB

Download
memory/1336-197-0x0000000002570000-0x0000000002612000-memory.dmp

Filesize
648KB

Download
memory/1336-194-0x0000000000400000-0x000000000061C000-memory.dmp

Filesize
2.1MB

Download
memory/1384-1-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1384-163-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2580-152-0x0000000003500000-0x000000000371C000-memory.dmp

Filesize
2.1MB

Download
memory/2580-169-0x0000000003500000-0x000000000371C000-memory.dmp

Filesize
2.1MB

Download
memory/2580-166-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2580-164-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/2580-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download