a72d358accb6742be87d30b4ef6df83a692213f55fe8d4c5d1770f8b3b1ab15b

Analysis

max time kernel
147s
max time network
140s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
12-12-2023 14:18

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General

Target

tuc3.exe
Size

7.2MB
MD5

e984ceb5a13deccb11d2ee88c33fae0e
SHA1

42f8e4d2f0f909f17aa90007cd2a331668d3fb80
SHA256

a72d358accb6742be87d30b4ef6df83a692213f55fe8d4c5d1770f8b3b1ab15b
SHA512

f4ff40e40026bd987d34cb1d988a40e7e1679529b45afa5a4bdf82ed2248af01dd4d14a854238a994d5dca94e5717d0c41bd2fdde3551d6473f9b6c134d7dc17
SSDEEP

196608:bxm50EF70ZaWLZ97vnC8LpS7+bI9cpSzj:REt0Zak7aIA7kSzj

Score

7^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
1716	tuc3.tmp
2280	numgif.exe
2892	numgif.exe

Loads dropped DLL 6 IoCs

pid	Process
2216	tuc3.exe
1716	tuc3.tmp
1716	tuc3.tmp
1716	tuc3.tmp
1716	tuc3.tmp
1716	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)\numGIF\bin\x86\is-RF35P.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\is-1K99K.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-M54VJ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-B7RCO.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-NOBLL.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-NTL61.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-36C1J.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\uninstall\is-IVHRT.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-T4L8R.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-NRBC0.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-MG099.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-56TRS.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-5RNV6.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-MG3GK.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-EFM38.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DEEU3.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-LU27G.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-8ATKT.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-RSINA.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-T5MT5.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\numGIF\uninstall\unins000.dat	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-NEANC.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DSCOB.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-6AFN1.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\lessmsi\is-N3LAP.tmp	tuc3.tmp
File opened for modification	C:\Program Files (x86)\numGIF\numgif.exe	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-O45EP.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-F82T2.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-VT2HE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-7QFND.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-2QV4C.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-PDN0C.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-CVQCH.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-T1KE7.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-D0PST.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-59KS2.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-MM50J.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-VFBSE.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-ACRU9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-T1JON.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-LANO3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-EO99N.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-DDGNV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-QBTNQ.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\stuff\is-R042A.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-SVVE5.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-L1F3P.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-TC9C3.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-2ITBF.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-UP6CT.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-SB471.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-064GC.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-1JE7S.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-I4A16.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-BTKC9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-PO38K.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-IMMM9.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-QF0IF.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-3NG2U.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-OPMOV.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-JLFAP.tmp	tuc3.tmp
File created	C:\Program Files (x86)\numGIF\bin\x86\is-2QJB7.tmp	tuc3.tmp

Runs net.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1716	tuc3.tmp

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 2216 wrote to memory of 1716	2216	tuc3.exe	28
PID 1716 wrote to memory of 1544	1716	tuc3.tmp	29
PID 1716 wrote to memory of 1544	1716	tuc3.tmp	29
PID 1716 wrote to memory of 1544	1716	tuc3.tmp	29
PID 1716 wrote to memory of 1544	1716	tuc3.tmp	29
PID 1716 wrote to memory of 2280	1716	tuc3.tmp	31
PID 1716 wrote to memory of 2280	1716	tuc3.tmp	31
PID 1716 wrote to memory of 2280	1716	tuc3.tmp	31
PID 1716 wrote to memory of 2280	1716	tuc3.tmp	31
PID 1716 wrote to memory of 2844	1716	tuc3.tmp	32
PID 1716 wrote to memory of 2844	1716	tuc3.tmp	32
PID 1716 wrote to memory of 2844	1716	tuc3.tmp	32
PID 1716 wrote to memory of 2844	1716	tuc3.tmp	32
PID 1716 wrote to memory of 2892	1716	tuc3.tmp	33
PID 1716 wrote to memory of 2892	1716	tuc3.tmp	33
PID 1716 wrote to memory of 2892	1716	tuc3.tmp	33
PID 1716 wrote to memory of 2892	1716	tuc3.tmp	33
PID 2844 wrote to memory of 268	2844	net.exe	35
PID 2844 wrote to memory of 268	2844	net.exe	35
PID 2844 wrote to memory of 268	2844	net.exe	35
PID 2844 wrote to memory of 268	2844	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:2216
- C:\Users\Admin\AppData\Local\Temp\is-DP3U1.tmp\tuc3.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-DP3U1.tmp\tuc3.tmp" /SL5="$4014E,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:1716
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\system32\schtasks.exe" /Query
    3⤵
    PID:1544
- - C:\Program Files (x86)\numGIF\numgif.exe
    "C:\Program Files (x86)\numGIF\numgif.exe" -i
    3⤵
    - Executes dropped EXE
    PID:2280
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" helpmsg 12
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2844
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 helpmsg 12
      4⤵
      PID:268
- - C:\Program Files (x86)\numGIF\numgif.exe
    "C:\Program Files (x86)\numGIF\numgif.exe" -s
    3⤵
    - Executes dropped EXE
    PID:2892

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
2.1MB

MD5
107facb340bb80db886ca99f22f21e8e

SHA1
b6659a80bf108c0c8f81515e43f1d802af044fe2

SHA256
55de8ba6df3b68b6f49bb7f2edde1b1daa74398f92671e5348c32dd8b831c64e

SHA512
ffd160ad17d2a3445fe92f6cfaf42f4328df2b355f82d0706dc64a8e7ef021e2a0aa5add8474da6123b33747e6de85698d7bd5c4644466e92869396c2cdfa919

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-CML5P.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-CML5P.tmp\_isetup\_isdecmp.dll

Filesize
19KB

MD5
3adaa386b671c2df3bae5b39dc093008

SHA1
067cf95fbdb922d81db58432c46930f86d23dded

SHA256
71cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38

SHA512
bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303

Download Submit
\Users\Admin\AppData\Local\Temp\is-CML5P.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-DP3U1.tmp\tuc3.tmp

Filesize
687KB

MD5
f448d7f4b76e5c9c3a4eaff16a8b9b73

SHA1
31808f1ffa84c954376975b7cdb0007e6b762488

SHA256
7233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49

SHA512
f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4

Download Submit
memory/1716-164-0x0000000000400000-0x00000000004BC000-memory.dmp

Filesize
752KB

Download
memory/1716-8-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1716-151-0x00000000035A0000-0x00000000037C9000-memory.dmp

Filesize
2.2MB

Download
memory/1716-167-0x00000000035A0000-0x00000000037C9000-memory.dmp

Filesize
2.2MB

Download
memory/1716-166-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2216-1-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2216-163-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2280-154-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2280-155-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2280-153-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2280-158-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-184-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-191-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-160-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-171-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-170-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-174-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-175-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-178-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-181-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-162-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-186-0x0000000002710000-0x00000000027AE000-memory.dmp

Filesize
632KB

Download
memory/2892-165-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-194-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-197-0x0000000002710000-0x00000000027AE000-memory.dmp

Filesize
632KB

Download
memory/2892-198-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-201-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-204-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-207-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-208-0x0000000002710000-0x00000000027AE000-memory.dmp

Filesize
632KB

Download
memory/2892-209-0x0000000002710000-0x00000000027AE000-memory.dmp

Filesize
632KB

Download
memory/2892-213-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download
memory/2892-216-0x0000000000400000-0x0000000000629000-memory.dmp

Filesize
2.2MB

Download