observer | 8299e1c15b75e38fbd3aca4b5e64ee8994d48458023764c9f899604f8a11cdab

Analysis

max time kernel
144s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 09:48

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General

Target
tmp.exe
Size 1.0MB
Sample240220-lssecsfc36
SHA256 8299e1c15b75e38fbd3aca4b5e64ee8994d48458023764c9f899604f8a11cdab
MD5 13125bd66d02c013b3eda2c69aff4ef3
SHA1 3b70cc23e7877fea920e0260ef6fd9b56076930c
SHA512 e6931d70ef77f638fe15e463e9a77f246913501faf1dc10ea09d57558d19c65191c7025dda80d45e947e45eb01ef4807fe7ab0ad7f84f26b55eb717e2b4c1280
SSDEEP 24576:RtLWjQcTsLY9K9ZZqf5MoLtaumQ1dpx8pUO0LV:3L6L6Y9KXZqf5LLl1jrfJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

observer stealer

Malware Config

Extracted

Family

observer

http://5.42.66.25:3000

Signatures

Observer
Observer is an infostealer written in C++.
stealer observer

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	tmp.exe

Deletes itself 1 IoCs

pid	Process
4968	Awareness.pif

Executes dropped EXE 1 IoCs

pid	Process
4968	Awareness.pif

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4432	4968	WerFault.exe	96
4180	4968	WerFault.exe	96

Enumerates processes with tasklist 1 TTPs 2 IoCs

Process Discovery

T1057

pid	Process
2336	tasklist.exe
3860	tasklist.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2744	PING.EXE

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2336	tasklist.exe
Token: SeDebugPrivilege	3860	tasklist.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
4968	Awareness.pif
4968	Awareness.pif
4968	Awareness.pif

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 2440	640	tmp.exe	86
PID 640 wrote to memory of 2440	640	tmp.exe	86
PID 640 wrote to memory of 2440	640	tmp.exe	86
PID 2440 wrote to memory of 2336	2440	cmd.exe	88
PID 2440 wrote to memory of 2336	2440	cmd.exe	88
PID 2440 wrote to memory of 2336	2440	cmd.exe	88
PID 2440 wrote to memory of 60	2440	cmd.exe	89
PID 2440 wrote to memory of 60	2440	cmd.exe	89
PID 2440 wrote to memory of 60	2440	cmd.exe	89
PID 2440 wrote to memory of 3860	2440	cmd.exe	91
PID 2440 wrote to memory of 3860	2440	cmd.exe	91
PID 2440 wrote to memory of 3860	2440	cmd.exe	91
PID 2440 wrote to memory of 2176	2440	cmd.exe	92
PID 2440 wrote to memory of 2176	2440	cmd.exe	92
PID 2440 wrote to memory of 2176	2440	cmd.exe	92
PID 2440 wrote to memory of 1144	2440	cmd.exe	93
PID 2440 wrote to memory of 1144	2440	cmd.exe	93
PID 2440 wrote to memory of 1144	2440	cmd.exe	93
PID 2440 wrote to memory of 832	2440	cmd.exe	94
PID 2440 wrote to memory of 832	2440	cmd.exe	94
PID 2440 wrote to memory of 832	2440	cmd.exe	94
PID 2440 wrote to memory of 3712	2440	cmd.exe	95
PID 2440 wrote to memory of 3712	2440	cmd.exe	95
PID 2440 wrote to memory of 3712	2440	cmd.exe	95
PID 2440 wrote to memory of 4968	2440	cmd.exe	96
PID 2440 wrote to memory of 4968	2440	cmd.exe	96
PID 2440 wrote to memory of 4968	2440	cmd.exe	96
PID 2440 wrote to memory of 2744	2440	cmd.exe	97
PID 2440 wrote to memory of 2744	2440	cmd.exe	97
PID 2440 wrote to memory of 2744	2440	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k move Bathrooms Bathrooms.bat & Bathrooms.bat & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:2336
- - C:\Windows\SysWOW64\findstr.exe
    findstr /I "avastui.exe avgui.exe nswscsvc.exe sophoshealth.exe"
    3⤵
    PID:60
- - C:\Windows\SysWOW64\tasklist.exe
    tasklist
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:3860
- - C:\Windows\SysWOW64\findstr.exe
    findstr /I "wrsa.exe opssvc.exe"
    3⤵
    PID:2176
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c md 7654
    3⤵
    PID:1144
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c copy /b Compound + Injection + Emotions + Worm + Participants + Richmond 7654\Awareness.pif
    3⤵
    PID:832
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c copy /b Subsequent + Controversy 7654\Q
    3⤵
    PID:3712
- - C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\7654\Awareness.pif
    7654\Awareness.pif 7654\Q
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:4968
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1484
      4⤵
      Program crash
      PID:4432
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4968 -s 1476
      4⤵
      Program crash
      PID:4180
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 5 localhost
    3⤵
    - Runs ping.exe
    PID:2744

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4968 -ip 4968
1⤵
PID:3164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4968 -ip 4968
1⤵
PID:636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Process Discovery

T1057

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

Awareness.pif

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\7654\Awareness.pif
Size 924KB
SHA256 f58d3a4b2f3f7f10815c24586fae91964eeed830369e7e0701b43895b0cefbd3
MD5 848164d084384c49937f99d5b894253e
SHA1 3055ef803eeec4f175ebf120f94125717ee12444
SHA512 aabe1cf076f48f32542f49a92e4ca9f054b31d5a9949119991b897b9489fe775d8009896408ba49ac43ec431c87c0d385daead9dbbde7ef6309b0c97bbaf852a
SSDEEP 24576:LOo8pEnK4mrqlEZuVZ2HOI+X0l1lMZyYFaeBmyF:LF8p4KpqlEZeXI+X0TVcae3F
MD5 SHA1 SHA512 SSDEEP

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Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\7654\Q
Size 858KB
SHA256 a036ba664ead310f1bacb021289a78f673842937ecbc0b2e984ba41e6f9428c0
MD5 e6a62806fa38a27240122f2840b3fec1
SHA1 f99c345a6e63e55910ef081247c8845f707426c6
SHA512 b1cfe019d5b228915e3d3502f7dd773a61ece04d23633c82d2239cc9775cd65f5c1d3f72baab1032d40b9e1175054d3e87be2931e2ffbc3ebe942f1823bffa46
SSDEEP 12288:oX1/DK7DWQsWQ33WmyfSgj8MCNUa/SU59bjDfHQoK5hT5RGcMWgEEBFLneHyICbA:dqpl2KF59XDPghFEcMNHQ
MD5 SHA1 SHA512 SSDEEP

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Bathrooms

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Bathrooms
Size 11KB
SHA256 cc9605d93f0b3536ea951b84f3fbe3d0196f361de2276038165ceb2200c92c7b
MD5 b1ef379960b1cc12b80454174ef222b3
SHA1 e85d00b4822433613e0d1523abc1edc4220421fe
SHA512 7a62f6413986032298a8baaed564becbadd24ed70949d64ef3411fbec488b82820c04d7c250165ea57371784168710403f94940acae8a97ff10ace57c27ec2a8
SSDEEP 192:tpSv1guJg7Hc1O0z33ujiAGdgiim9+SF5O3X:8guSrc1pA3X
MD5 SHA1 SHA512 SSDEEP

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Compound

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Compound
Size 277KB
SHA256 703e01cdb77a38db64afbcc43b8567a808dd0e5702eab102e16364437ceb2420
MD5 2ec41cd75e4e41ee8c1b1e0b9d31c7e4
SHA1 1ae820229667223c05471140f04486174f818306
SHA512 46ea1d8606dedad2acd591c7591956925065952465423f1f77431e5b55de2955fe5db8ab8a46d92ef5ca0458e09a0dfa99461d6c849c0818f28d3863b358649d
SSDEEP 6144:LQBk7JjX74cN0lrztgwU0Wyw3mFygyE4mqd12lqlEAehuV:LO0z8e0lvSr0Wyw20K4mqClqlEZuV
MD5 SHA1 SHA512 SSDEEP

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Controversy

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Controversy
Size 432KB
SHA256 808a6e79cff289bff2698b185e747ccd5d6c373b1c9fdf8128a9443ac90217ae
MD5 646bb04049cee0a56192d2837d687ccd
SHA1 01579c8a98bdb098719e3398d3f234920b402d71
SHA512 f7dfeda6a5abffde61898fc12596f41a3de5d12a0c9498d0b7a1d0c374ce4527691968aa6d67c91b3d706d57e96c45b96f400ad26d1120886f374fcbb7893ece
SSDEEP 12288:VHQoK5hT5RGcMWgEEBFLneHyICbICC+I2jm:lghFEcMNHQ
MD5 SHA1 SHA512 SSDEEP

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Emotions

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Emotions
Size 222KB
SHA256 a2d9ac3903c9299a993206ec17f7ec8e06bee2293239e8a8b517eef561de2d3d
MD5 041ce253674ba21b9d38fc9fde7f054a
SHA1 7a59249c38c6a5bfe7766d2b5ac226a9cfd408d1
SHA512 48ed73cb5f6872980018050a07741e08cf3abb3b7a1365eac635906b832c9963330d7523e21ac6a0f5c40485daea78df206d04a4c51c5ff9aec424f56edcd2e1
SSDEEP 6144:+fA6Gfm608DsvqJX4xNAB+xHFq9O0lHPOGUWLhxjRYmFqI:8KmNvqJWNAB+X0lHPOGNnlMI
MD5 SHA1 SHA512 SSDEEP

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Injection

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Injection
Size 117KB
SHA256 851183e54980e91bdc772a752f738547841b22629afc14d05da9c954f320127a
MD5 246eaad20996e50d7ef60b9200bd9651
SHA1 65d11b058e25e584ce67489c1ccfd85d09f15d0c
SHA512 a0c24a4792afbc20f9b166e7a8764016409acd474091a0978d4b2dfd061ca142103549d19459f23d1dbdb0e624395c1258b8a609c6c283992ff625891e83eefd
SSDEEP 3072:8CkrwzW3Nzl8F5hPLaLWysRIO7vHZnBfzHl8Dz5YaZYvI:8N8zwNzlmhPL1b5nZ2tZ6I
MD5 SHA1 SHA512 SSDEEP

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Participants

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Participants
Size 167KB
SHA256 a8fd7c611b67f141db0423e5069f0e6fa5e8b4d441f920ceb0378692a2528754
MD5 f8f388e977f31c5fe1748541b54920ae
SHA1 e7136e52621f93ffb84325b57e98985ebc6512c1
SHA512 98d423d056f2bf9e63651d0106a6bf96af135c8f190e34222ba72786b5f2bab5ad8ffe82df47e34ba446fca03d3db3f7bc3b033774b79edffe6262f813b84e52
SSDEEP 1536:QMaj6iTcohiPfKj+wsxjgarB3RZg3EYrDWyu0uZo2+9BkxXiblenlJJyB:s6jKj+wsxjgarB3RZgDWy4ZNogXJ3s
MD5 SHA1 SHA512 SSDEEP

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Richmond

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Richmond
Size 21KB
SHA256 9f7a626c7d33e97f707c415aeeb3f8f3697edd0988fee6b3be07e9a02b74ba75
MD5 1ca5141d992262432ba4fff828d7d092
SHA1 5e9aec92c0e85c0b7f576bf18adba9e3c3e93897
SHA512 198e63037f7906681467daed4cffc6b07885ade1d80b5855746fe02c2d86689e1c6dbae6432784d67fe092e041e4943de846e0aa791bdc5c5a5e08da06af0242
SSDEEP 384:ejWoQL9dR0Xvwp52UW1l/hw50gFQTVaeCV1VEVFJ8ZcGwGBk7/UMQ3K6:e3rE2UWb/hMjFQTVat3VEV3GPkjI
MD5 SHA1 SHA512 SSDEEP

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Subsequent

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Subsequent
Size 426KB
SHA256 4e84c8cea810d1466db293cb934b60e10067d34c851a2eff44894c60681810f0
MD5 c42dc09d03678e36fcd19b13b8f8e502
SHA1 be31c2f6e43f87a56eeea107ca20822f5d2b6c52
SHA512 fd5028a518bbdfaddf75e6d2ce10956bd573535ab3f4f17aad11062711b10259c1983a2627ce283c49ee768148e993f4f0453304f8b0b2461e9c0c5b6ac29ad2
SSDEEP 12288:oX1/DK7DWQsWQ33WmyfSgj8MCNUa/SU59bjDF:dqpl2KF59XDF
MD5 SHA1 SHA512 SSDEEP

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Worm

Path C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Worm
Size 120KB
SHA256 5dbffacd5038833530ba781b5b1a020e504257ae796793b3b47c516549a9be0f
MD5 8b9a2094874a50a5d6611512322a41df
SHA1 649b2fc4751a857ac795637890c3ffd1a1f6c069
SHA512 f5a4e4460e1881e8a6e6db0e21d59efc4e635e2ba6c8620856d27e7b940f1f7784846e3fa7a8e5468506a7db6397ec411325bd60ea8c9f833bbcccc1a523491d
SSDEEP 1536:VV8CVGD5EDuVGHj1vtKs51VqaHwsWcfcd0vtmgMbFuz08QuklMBNIi9u5aAwubP8:ACVs5A3q5eAg0Fuz08XvBNbIaAtbP8
MD5 SHA1 SHA512 SSDEEP

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memory/4968-32-0x0000000077061000-0x0000000077181000-memory.dmp

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memory/4968-33-0x0000000003B00000-0x0000000003B01000-memory.dmp

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memory/4968-34-0x0000000000370000-0x00000000003E3000-memory.dmp

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memory/4968-35-0x0000000000370000-0x00000000003E3000-memory.dmp

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memory/4968-36-0x0000000000370000-0x00000000003E3000-memory.dmp

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memory/4968-37-0x0000000000370000-0x00000000003E3000-memory.dmp

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memory/4968-38-0x0000000000370000-0x00000000003E3000-memory.dmp

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memory/4968-39-0x0000000000370000-0x00000000003E3000-memory.dmp

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