75085e19a2fb105bf96bf5f942cd3fce8c4bd71e8d761c16e96d194e45a5d555

General

Target

utweb_installer.exe
Size

1.7MB
MD5

429e56e044f63422147b548ed1bd97a8
SHA1

c26d32fd4fd0628381ecac39c60cc1c4808b3fe0
SHA256

75085e19a2fb105bf96bf5f942cd3fce8c4bd71e8d761c16e96d194e45a5d555
SHA512

c3a67877ec16e85f8f55027ad05b7644517d725575432cb4ebe5ae5da5b95bc258d0cac2145b571ef1f2522bdd19507516a0edc747c08d62bcc9f2cb10a8a5cb
SSDEEP

24576:v7FUDowAyrTVE3U5FxXuX5LsU/gpJPl/M/EdYgLMp/rcisGTjgy8xJ4aldp78JH:vBuZrEUleRjIpZlU/EigLerrzTjg5M9H

Score

4^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

utweb_installer.tmp

pid process

2264 utweb_installer.tmp
Loads dropped DLL 2 IoCs

Processes:

utweb_installer.exeutweb_installer.tmp

pid process

2396 utweb_installer.exe
2264 utweb_installer.tmp

pid	process
2264	utweb_installer.tmp

pid	process
2396	utweb_installer.exe
2264	utweb_installer.tmp

Modifies system certificate store 2 TTPs 4 IoCs

Install Root Certificate

T1553.004

Modify Registry

T1112

Processes:

utweb_installer.tmp

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6	utweb_installer.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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	utweb_installer.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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	utweb_installer.tmp
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\317A2AD07F2B335EF5A1C34E4B57E8B7D8F1FCA6\Blob = 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	utweb_installer.tmp

Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 3 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

utweb_installer.tmp

pid process

2264 utweb_installer.tmp

description	flow	ioc
HTTP User-Agent header	3	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
2264	utweb_installer.tmp

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

utweb_installer.exe

description	pid	process	target process
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp
PID 2396 wrote to memory of 2264	2396	utweb_installer.exe	utweb_installer.tmp

C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe
"C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2396

C:\Users\Admin\AppData\Local\Temp\is-6EFMF.tmp\utweb_installer.tmp
"C:\Users\Admin\AppData\Local\Temp\is-6EFMF.tmp\utweb_installer.tmp" /SL5="$9001C,898126,819200,C:\Users\Admin\AppData\Local\Temp\utweb_installer.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies system certificate store
- Suspicious behavior: GetForegroundWindowSpam
PID:2264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
add9b9817b03e53b8de3a5b59cb098ad

SHA1
c946396e4e9ec0bb197bfded3fe12a9de4ae6a31

SHA256
0a104d20c7a5a44ef2b693bde7332434efd195fd9d273eaccc23a5e8dc9849dd

SHA512
03e07aa913637b36995feb17001f99442f5f84209cf4e656f2475d059f19ce29439ff2a7198c4815dc87db143c29f72923528ad2794f5a741a46c1e38aae7d03

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab8191.tmp

Filesize
62KB

MD5
3ac860860707baaf32469fa7cc7c0192

SHA1
c33c2acdaba0e6fa41fd2f00f186804722477639

SHA256
d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

SHA512
d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar8210.tmp

Filesize
164KB

MD5
4ff65ad929cd9a367680e0e5b1c08166

SHA1
c0af0d4396bd1f15c45f39d3b849ba444233b3a2

SHA256
c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

SHA512
f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4K3AP.tmp\Logo.png

Filesize
12KB

MD5
a00cfe887e254c462ad0c6a6d3fb25b6

SHA1
c603a192e23df46c719febf07fd4207c96b1f0f9

SHA256
bca0271f56f7384942ff3affb79fa78ccdceabf7dda89ad3c138226da324cdb1

SHA512
6dc95a05e2712d85067aa92144f7e00871d2f60e377c6df0253e3ff48a02280d4148578fbbf22018693227bdcc035a8bd391f3c390aed39ca58749f28fc19862

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-6EFMF.tmp\utweb_installer.tmp

Filesize
3.0MB

MD5
c9f691236ee6a47257a5ffa64ff13831

SHA1
3fd1df0f872431f2028d7727c55441e9cfb6ed0c

SHA256
0c08e3fb5c375a4935d3bc08574a0d810630131f1af44a3541555038984566b6

SHA512
ddd660c2bd3afa0c3e7b2334d132bd489df6a07bd5ba0a13b439b29667abb51432f863790b299e1d463e968a6611e6f6b72ce2c540ebfd185ac6c023006397a2

Download Submit
\Users\Admin\AppData\Local\Temp\is-4K3AP.tmp\botva2.dll

Filesize
37KB

MD5
67965a5957a61867d661f05ae1f4773e

SHA1
f14c0a4f154dc685bb7c65b2d804a02a0fb2360d

SHA256
450b9b0ba25bf068afbc2b23d252585a19e282939bf38326384ea9112dfd0105

SHA512
c6942818b9026dc5db2d62999d32cf99fe7289f79a28b8345af17acf9d13b2229a5e917a48ff1f6d59715bdbcb00c1625e0302abcfe10ca7e0475762e0a3f41b

Download Submit
\Users\Admin\AppData\Local\Temp\is-6EFMF.tmp\utweb_installer.tmp

Filesize
3.0MB

MD5
c9f691236ee6a47257a5ffa64ff13831

SHA1
3fd1df0f872431f2028d7727c55441e9cfb6ed0c

SHA256
0c08e3fb5c375a4935d3bc08574a0d810630131f1af44a3541555038984566b6

SHA512
ddd660c2bd3afa0c3e7b2334d132bd489df6a07bd5ba0a13b439b29667abb51432f863790b299e1d463e968a6611e6f6b72ce2c540ebfd185ac6c023006397a2

Download Submit
memory/2264-62-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2264-179-0x00000000034D0000-0x00000000034DF000-memory.dmp

Filesize
60KB

Download
memory/2264-186-0x0000000000400000-0x0000000000710000-memory.dmp

Filesize
3.1MB

Download
memory/2264-187-0x00000000034D0000-0x00000000034DF000-memory.dmp

Filesize
60KB

Download
memory/2264-188-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2396-55-0x0000000000400000-0x00000000004D5000-memory.dmp

Filesize
852KB

Download
memory/2396-185-0x0000000000400000-0x00000000004D5000-memory.dmp

Filesize
852KB

Download

Analysis

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