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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231201-en -
resource tags
arch:x64arch:x86image:win7-20231201-enlocale:en-usos:windows7-x64system -
submitted
12/12/2023, 17:17
Static task
static1
Behavioral task
behavioral1
Sample
tuc4.exe
Resource
win7-20231201-en
Behavioral task
behavioral2
Sample
tuc4.exe
Resource
win10v2004-20231130-en
General
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Target
tuc4.exe
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Size
7.1MB
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MD5
add86d51b036db3566dd0b43e0c09a6d
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SHA1
51e42c7982d846b90619fb8b41b1855802def854
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SHA256
9adc96b2873039384b1c7cebdfa9f92d09786c2c4a0386cac0444980c784281a
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SHA512
d8087e242e230e15bf88b84095e07bdebec46cab95df35f4f5791e3bb6c8bb060d7ff5768f5d28dd03ce23061b0abcf87b1f0ed1edde1b731e5ba48392d7e033
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SSDEEP
196608:Kxm5D5YUyRe7VvZKwamjGKAVW7R+gSoASGm8PvsLMwzj:MRepZKwaS79SoASGDP0Qwzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 1304 tuc4.tmp 2236 numgif.exe 1592 numgif.exe -
Loads dropped DLL 6 IoCs
pid Process 2052 tuc4.exe 1304 tuc4.tmp 1304 tuc4.tmp 1304 tuc4.tmp 1304 tuc4.tmp 1304 tuc4.tmp -
Unexpected DNS network traffic destination 3 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 Destination IP 152.89.198.214 Destination IP 194.49.94.194 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Program Files directory 63 IoCs
description ioc Process File created C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-B6VCB.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-9GCA1.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-0CUOA.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-33QRJ.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-FMNU3.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-G73K1.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-RPEJF.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-VB38R.tmp tuc4.tmp File opened for modification C:\Program Files (x86)\numGIF\uninstall\unins000.dat tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-PJ42O.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-L25FO.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-NAPNE.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-H25IT.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-EK70O.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-U1DNE.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-LCG1P.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-6M66K.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-8MU2U.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-8278G.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-QEIAM.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-C115C.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-PE5J2.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-0V0I3.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\uninstall\unins000.dat tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-IMR9A.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-D5ME1.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-52BRR.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-516CL.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-N0F6B.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-CGQ13.tmp tuc4.tmp File opened for modification C:\Program Files (x86)\numGIF\numgif.exe tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3UQQ3.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3V28E.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-S659N.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\stuff\is-A6JIL.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-7QCU5.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-4BDH6.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-EAF4C.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\lessmsi\is-KC276.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-TTJQH.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-2SH4V.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-TSRQR.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-F2B1C.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-L9Q4E.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-VRG4L.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\is-TV3O1.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\stuff\is-JD4E6.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-1FJHD.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-SVIR3.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-EPPI1.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-0EJFT.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-HIF8J.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-BU2UB.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\stuff\is-KCB7G.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\stuff\is-6FFQT.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3QLO9.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-RI9IF.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-KD88H.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3CJIE.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-MEMTD.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-N7MQF.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\uninstall\is-NPPJD.tmp tuc4.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-ASAKP.tmp tuc4.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1304 tuc4.tmp -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 2052 wrote to memory of 1304 2052 tuc4.exe 28 PID 1304 wrote to memory of 1856 1304 tuc4.tmp 29 PID 1304 wrote to memory of 1856 1304 tuc4.tmp 29 PID 1304 wrote to memory of 1856 1304 tuc4.tmp 29 PID 1304 wrote to memory of 1856 1304 tuc4.tmp 29 PID 1304 wrote to memory of 2236 1304 tuc4.tmp 31 PID 1304 wrote to memory of 2236 1304 tuc4.tmp 31 PID 1304 wrote to memory of 2236 1304 tuc4.tmp 31 PID 1304 wrote to memory of 2236 1304 tuc4.tmp 31 PID 1304 wrote to memory of 1680 1304 tuc4.tmp 32 PID 1304 wrote to memory of 1680 1304 tuc4.tmp 32 PID 1304 wrote to memory of 1680 1304 tuc4.tmp 32 PID 1304 wrote to memory of 1680 1304 tuc4.tmp 32 PID 1304 wrote to memory of 1592 1304 tuc4.tmp 34 PID 1304 wrote to memory of 1592 1304 tuc4.tmp 34 PID 1304 wrote to memory of 1592 1304 tuc4.tmp 34 PID 1304 wrote to memory of 1592 1304 tuc4.tmp 34 PID 1680 wrote to memory of 1640 1680 net.exe 35 PID 1680 wrote to memory of 1640 1680 net.exe 35 PID 1680 wrote to memory of 1640 1680 net.exe 35 PID 1680 wrote to memory of 1640 1680 net.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc4.exe"C:\Users\Admin\AppData\Local\Temp\tuc4.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2052 -
C:\Users\Admin\AppData\Local\Temp\is-T31RF.tmp\tuc4.tmp"C:\Users\Admin\AppData\Local\Temp\is-T31RF.tmp\tuc4.tmp" /SL5="$30136,7235080,121856,C:\Users\Admin\AppData\Local\Temp\tuc4.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1304 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:1856
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C:\Program Files (x86)\numGIF\numgif.exe"C:\Program Files (x86)\numGIF\numgif.exe" -i3⤵
- Executes dropped EXE
PID:2236
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 123⤵
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 124⤵PID:1640
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C:\Program Files (x86)\numGIF\numgif.exe"C:\Program Files (x86)\numGIF\numgif.exe" -s3⤵
- Executes dropped EXE
PID:1592
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
808KB
MD566ce1a334fa7ccdc1635f2bb30fcad1d
SHA1383c500c197ace6675aaaa28b6c7a9d527b92dd2
SHA2564d3770b4e7aa8f2f36dd1955b54271df0da0c8d7ac8b7c5c8ffeb4fed16e60a1
SHA5127fd1820f14c1d152983825c7cc6f218f796ec9343b05c2027e1dc921e92946dade757136ed55e2e9334ab6991498efe907b5a430f3219d2db2ce3c39045c6541
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Filesize
325KB
MD5e51684fd134ddc0a14beaa42b2eefe81
SHA14a77d677637b434fc4c42cd10faf9d6d8ff6c7a9
SHA256fab02508a2a5f705f544ef055a66299a1423c4d5f5d34dcab2ee57efc35eca51
SHA5124df4ae780dda70f453ad9963a8167a94b9742cd23f03ca82798826f85739798750626f207bf625b299e2154aefc7ab829998317074526ed48fb7dd0440f5c728
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Filesize
143KB
MD5faeb382473ce3ad54e8fcfb7d19752f3
SHA1480f9c7545a1583b6ae24b3b58dea0a6e20fa754
SHA25628f3b5f86169e559250fdb0936801c855b434c9ff65f189dbc15dcbc85c855cb
SHA512e578dfc211b3d84b3f0faeb473cb14e26822cb4d4a5720b23e118dfa9a3b1f76cab57597decb4f78f8ffa7d554cd19b21a316916e20ff999bbe6453a4d44c6e5
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Filesize
1.7MB
MD5e0b7778112e8ccbe497ca913b0ea310a
SHA1b75663eed3050517563a3a1581a13689f886f912
SHA2564839219158e83fc36dd8ef1e9aea4b9195b4d4dcd4ee84850a42628dbc5a57b2
SHA512137a9e71216c4cd1042399efa49fc54e697be6f880306a854b37cb6c26abf8b1b71cfaaa915deaa3e191559d059697933f6335f0b48372fb1baa0e56125f6d53
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
19KB
MD53adaa386b671c2df3bae5b39dc093008
SHA1067cf95fbdb922d81db58432c46930f86d23dded
SHA25671cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38
SHA512bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4