nymaim | ea30a2583be92f4de74e44bf8d33ce4c276455825c697afe0dac0b5db6e68178

General

Target

file.exe
Size

2.3MB
MD5

5cbcbbf17ff347307d20dde00212e28d
SHA1

9605288aceaa127bd0f524f869898cbadfcadd1a
SHA256

ea30a2583be92f4de74e44bf8d33ce4c276455825c697afe0dac0b5db6e68178
SHA512

720902936ec33bc10e4eec2e94245b528057598bc2e5f068e3392b9aa6ff1a6ce628e22716e9eca04fea9fe278b0e3370776334ec43b770374e08d154f0038e0
SSDEEP

49152:Z2A98FtD0ZEfoai+d7jFauLAXi+Bkf0cqRbXDBCKGkXTT2+3Hl7A5hq:MA98F9FNNd783XVBdc6z0KvXVlsDq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1980	is-NMJ60.tmp
2100	exsearcher60.exe
5096	JoDKyZQJW.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	exsearcher60.exe

Loads dropped DLL 1 IoCs

pid	Process
1980	is-NMJ60.tmp

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 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\exSearcher\unins000.dat	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-A4NHJ.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-MVOGC.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-55J5A.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-9AANF.tmp	is-NMJ60.tmp
File opened for modification	C:\Program Files (x86)\exSearcher\exsearcher60.exe	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-CFSKH.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-FVLSK.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-4U8HV.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-S8HIB.tmp	is-NMJ60.tmp
File created	C:\Program Files (x86)\exSearcher\is-RG7KT.tmp	is-NMJ60.tmp
File opened for modification	C:\Program Files (x86)\exSearcher\unins000.dat	is-NMJ60.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
3696	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2100	exsearcher60.exe
2100	exsearcher60.exe
2100	exsearcher60.exe
2100	exsearcher60.exe
2100	exsearcher60.exe
2100	exsearcher60.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3696	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 524 wrote to memory of 1980	524	file.exe	83
PID 524 wrote to memory of 1980	524	file.exe	83
PID 524 wrote to memory of 1980	524	file.exe	83
PID 1980 wrote to memory of 2100	1980	is-NMJ60.tmp	84
PID 1980 wrote to memory of 2100	1980	is-NMJ60.tmp	84
PID 1980 wrote to memory of 2100	1980	is-NMJ60.tmp	84
PID 2100 wrote to memory of 5096	2100	exsearcher60.exe	85
PID 2100 wrote to memory of 5096	2100	exsearcher60.exe	85
PID 2100 wrote to memory of 5096	2100	exsearcher60.exe	85
PID 2100 wrote to memory of 3540	2100	exsearcher60.exe	93
PID 2100 wrote to memory of 3540	2100	exsearcher60.exe	93
PID 2100 wrote to memory of 3540	2100	exsearcher60.exe	93
PID 3540 wrote to memory of 3696	3540	cmd.exe	95
PID 3540 wrote to memory of 3696	3540	cmd.exe	95
PID 3540 wrote to memory of 3696	3540	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:524
- C:\Users\Admin\AppData\Local\Temp\is-S7TEA.tmp\is-NMJ60.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-S7TEA.tmp\is-NMJ60.tmp" /SL4 $401E8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2110344 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Program Files (x86)\exSearcher\exsearcher60.exe
    "C:\Program Files (x86)\exSearcher\exsearcher60.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2100
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\JoDKyZQJW.exe
      4⤵
      Executes dropped EXE
      PID:5096
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "exsearcher60.exe" /f & erase "C:\Program Files (x86)\exSearcher\exsearcher60.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3540
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "exsearcher60.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\exSearcher\exsearcher60.exe

Filesize
3.3MB

MD5
73391efef7ebe5d24826cd54f7675b43

SHA1
ec5c66735093d80d699c31c88b927c7623aec777

SHA256
f4817fdc403a779ee21233a5c74c46eb00cf28e5e8e1b6f3ae63bf916358aef8

SHA512
5185a683df23fcfb49691abd176463933f475c749ca1cdd8d5fee2f1ca7301996d4699f215056756c9053c1e13c691f4eeba8c20cc77ea9b0c4d5a2f0b97690f

Download Submit
C:\Program Files (x86)\exSearcher\exsearcher60.exe

Filesize
3.3MB

MD5
73391efef7ebe5d24826cd54f7675b43

SHA1
ec5c66735093d80d699c31c88b927c7623aec777

SHA256
f4817fdc403a779ee21233a5c74c46eb00cf28e5e8e1b6f3ae63bf916358aef8

SHA512
5185a683df23fcfb49691abd176463933f475c749ca1cdd8d5fee2f1ca7301996d4699f215056756c9053c1e13c691f4eeba8c20cc77ea9b0c4d5a2f0b97690f

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-KLHSF.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S7TEA.tmp\is-NMJ60.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S7TEA.tmp\is-NMJ60.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\JoDKyZQJW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\JoDKyZQJW.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/524-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/524-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/524-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2100-143-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2100-144-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2100-142-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2100-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2100-152-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2100-155-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download

Analysis

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