e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787

General

Target

e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
Size

2.6MB
MD5

50718754b8ece3280c5ad2f9a99f6f58
SHA1

81efb8b295c4c06596cdcab8f5c4f48dd292741e
SHA256

e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787
SHA512

4da221a1f8db8f01abb7dfd525368208166ab0f416b750bbe87e3911e06a447cd69b9bdcde055078f69bd23ee2932f01bb0133712f5b1f8f2b64c55e8b07c9ee
SSDEEP

49152:JoUMoaz4KJ0atpf0h3U8pL8ibXG/kw2/dLInk1my/rD6cniVF:J5a86pOU8pL8ibXK329IkQy/rD6cq

Score

8^/10

spyware stealer upx

Malware Config

Signatures

Downloads MZ/PE file

Executes dropped EXE 4 IoCs

pid	Process
4568	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
4028	Assistant_110.0.5130.23_Setup.exe_sfx.exe
4728	assistant_installer.exe
1336	assistant_installer.exe

Loads dropped DLL 7 IoCs

pid	Process
4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
1436	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
4568	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
4728	assistant_installer.exe
4728	assistant_installer.exe
1336	assistant_installer.exe
1336	assistant_installer.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4288-3-0x0000000000A30000-0x0000000000F49000-memory.dmp	upx
behavioral2/memory/1436-4-0x0000000000A30000-0x0000000000F49000-memory.dmp	upx
behavioral2/files/0x0007000000023433-13.dat	upx
behavioral2/memory/4568-16-0x0000000000F70000-0x0000000001489000-memory.dmp	upx
behavioral2/memory/4568-20-0x0000000000F70000-0x0000000001489000-memory.dmp	upx
behavioral2/memory/1436-38-0x0000000000A30000-0x0000000000F49000-memory.dmp	upx

Enumerates connected drives 3 TTPs 2 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\D:	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
File opened (read-only)	\??\F:	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D4DE20D05E66FC53FE1A50882C78DB2852CAE474\Blob = 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	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4288 wrote to memory of 1436	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	79
PID 4288 wrote to memory of 1436	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	79
PID 4288 wrote to memory of 1436	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	79
PID 4288 wrote to memory of 4568	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	81
PID 4288 wrote to memory of 4568	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	81
PID 4288 wrote to memory of 4568	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	81
PID 4288 wrote to memory of 4028	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	84
PID 4288 wrote to memory of 4028	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	84
PID 4288 wrote to memory of 4028	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	84
PID 4288 wrote to memory of 4728	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	85
PID 4288 wrote to memory of 4728	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	85
PID 4288 wrote to memory of 4728	4288	e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe	85
PID 4728 wrote to memory of 1336	4728	assistant_installer.exe	86
PID 4728 wrote to memory of 1336	4728	assistant_installer.exe	86
PID 4728 wrote to memory of 1336	4728	assistant_installer.exe	86

C:\Users\Admin\AppData\Local\Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
"C:\Users\Admin\AppData\Local\Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Modifies system certificate store
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Users\Admin\AppData\Local\Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
  C:\Users\Admin\AppData\Local\Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=99.0.4788.31 --initial-client-data=0x2d8,0x2dc,0x2e0,0x2b4,0x2e4,0x754e20d0,0x754e20e0,0x754e20ec
  2⤵
  - Loads dropped DLL
  PID:1436
- C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe
  "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe" --version
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:4568
- C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\Assistant_110.0.5130.23_Setup.exe_sfx.exe
  "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\Assistant_110.0.5130.23_Setup.exe_sfx.exe"
  2⤵
  - Executes dropped EXE
  PID:4028
- C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\assistant_installer.exe
  "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\assistant_installer.exe" --version
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:4728
- - C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\assistant_installer.exe
    "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=110.0.5130.23 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x4e30e8,0x4e30f4,0x4e3100
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1336

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787.exe

Filesize
2.6MB

MD5
50718754b8ece3280c5ad2f9a99f6f58

SHA1
81efb8b295c4c06596cdcab8f5c4f48dd292741e

SHA256
e66ab5d2404fbb09b8c237d549827c3e0f2cdc2876487bbc1e268b065167c787

SHA512
4da221a1f8db8f01abb7dfd525368208166ab0f416b750bbe87e3911e06a447cd69b9bdcde055078f69bd23ee2932f01bb0133712f5b1f8f2b64c55e8b07c9ee

Download Submit
C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\Assistant_110.0.5130.23_Setup.exe_sfx.exe

Filesize
2.5MB

MD5
028fb19ee2cea3e611b4a85ac48fafbc

SHA1
d1a802b5df649282e896289b4ec5df8d512b53dd

SHA256
e8fa79e22926ae07a998b5d2bb1be9309d0a15772ac72b88f4eed66052f33117

SHA512
99959d7765c1e6636dee1841f214cb2d0c7684d7128381b0387fa9c7ef4a92ef62bb094087bdcb343e44196b5a333df3a2104ced9f49671197a06fafa27aff51

Download Submit
C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\assistant_installer.exe

Filesize
1.9MB

MD5
b6789061eb88781add48ec7095ff78e5

SHA1
c2cdf5723a94b3b5a69ad78a5e869347444abe0b

SHA256
c39c7199fa2221783ea61f085f484668e3c452706069b046cb0f4a9d4cb4c0a3

SHA512
7c9a61c7f8d45fb7a2591c0c57c22bca0b527e3b6b4a3bdde5fbdcca25abc1e0c56a244a39d4b65a91316eb8f19fb8232569f5781eedefbc0898646d4df10f9c

Download Submit
C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\dbgcore.DLL

Filesize
166KB

MD5
a4ed3b36776e0155fd24ffa609ffc2f4

SHA1
3d6496f21e0f04b6789365d06e71fe7de284b1c0

SHA256
b69387b9284dc36d377e4066c4cf361dc65efc6c784af0f8666d9684fabd2d29

SHA512
ae5d052fdcc7e7d3e593a1fb2dd5e64fcd75c7381ff4e4c5f4302d8d3c058a48c943c66d04c02d44d45c2bda36b3d3df096dfea26fc35d3c682bdd5221225e76

Download Submit
C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406120430401\assistant\dbghelp.dll

Filesize
1.7MB

MD5
fa64324149160877768551fd96c360dc

SHA1
dd76ebe617271465ae5820f49152f8a89703ae1a

SHA256
7f4a2cff90524b769781b763077be198d74834c6b576ef9f27132a415cbbaca8

SHA512
72161c1b0449f546e2a3560369f5cebbe71c5f098efb4037a9ec229310082b0fab2de10b8a0f94b0213d5119cd9ff66daeaa73ca2163ba0224b5cd8526f7bbea

Download Submit
C:\Users\Admin\AppData\Local\Temp\Opera_installer_2406120430392474288.dll

Filesize
4.4MB

MD5
5929d35f5dd25f951e3d67989df47554

SHA1
59fc6ede5facdf2e8c739bb2c3da626a35fbc658

SHA256
2c38bce7acbf817a52ef47da3ba3d21e93b0a141e05038ffeef9a77917c4e1d2

SHA512
16aa3cc00be95d280b438a6e82d512ec150cac05a33afd89d23fabf4bba741b0a225be6441422f0b5fcf6622183426612af315b50011e5efce757e1d3a64021d

Download Submit
C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat

Filesize
40B

MD5
c3edb2535f5856cbb74ff9b248635e57

SHA1
8ce0c79555812849bafed107384cd77479a66413

SHA256
d2b9e1ae1c3d8a84feb9766fea8091475ee43d9f6ca6280219a66c23d4bb20a3

SHA512
325e271e71dbb1b840fdaed31dfcc289f846e37d9a20506f7618a3e4c0249c0d05935212c785bf96275bfbdc8059f43f08b6de8f789f37956b179e9f3e903624

Download Submit
memory/1436-4-0x0000000000A30000-0x0000000000F49000-memory.dmp

Filesize
5.1MB

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memory/1436-38-0x0000000000A30000-0x0000000000F49000-memory.dmp

Filesize
5.1MB

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memory/4288-3-0x0000000000A30000-0x0000000000F49000-memory.dmp

Filesize
5.1MB

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memory/4568-16-0x0000000000F70000-0x0000000001489000-memory.dmp

Filesize
5.1MB

Download
memory/4568-20-0x0000000000F70000-0x0000000001489000-memory.dmp

Filesize
5.1MB

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Analysis

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