nymaim | 029b5416f28e9a62bf29b70a05df00a509945822fc7ad8c281139a59c10c05c2

General

Target

file.exe
Size

2.3MB
MD5

bcb408bb45dcd517865eb859c98feaf2
SHA1

1641f99c3fa39726e13f20bcfa932fec4574b954
SHA256

029b5416f28e9a62bf29b70a05df00a509945822fc7ad8c281139a59c10c05c2
SHA512

c90824e1d8e019728140365383d20063a5ad682627c3807ed86a4a98db289299fa08d830673cc5aefde9f13fee6d25133937be051a02376d326e54e05c07b27a
SSDEEP

49152:Z2uUQdvwErpuMCxnJPlF8eunPuyjFspKv8aG2CC0TsWsys6G2R7nkAHWCA5hq:MuUQyypuM5tn2IsJaGvzsWsD6G2Vn5Ws

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
4848	is-7RI7M.tmp
2264	ezsearcher61.exe
1492	vzGVyZeovhc.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	ezsearcher61.exe

Loads dropped DLL 1 IoCs

pid	Process
4848	is-7RI7M.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)\ezSearcher\is-0GCP6.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-F72AS.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-BS93G.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-NJ2NC.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-V1RR4.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-23UF3.tmp	is-7RI7M.tmp
File opened for modification	C:\Program Files (x86)\ezSearcher\unins000.dat	is-7RI7M.tmp
File opened for modification	C:\Program Files (x86)\ezSearcher\ezsearcher61.exe	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\unins000.dat	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-BPRVG.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-839JT.tmp	is-7RI7M.tmp
File created	C:\Program Files (x86)\ezSearcher\is-70OS5.tmp	is-7RI7M.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
1540	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2264	ezsearcher61.exe
2264	ezsearcher61.exe
2264	ezsearcher61.exe
2264	ezsearcher61.exe
2264	ezsearcher61.exe
2264	ezsearcher61.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1540	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 4848	1116	file.exe	83
PID 1116 wrote to memory of 4848	1116	file.exe	83
PID 1116 wrote to memory of 4848	1116	file.exe	83
PID 4848 wrote to memory of 2264	4848	is-7RI7M.tmp	84
PID 4848 wrote to memory of 2264	4848	is-7RI7M.tmp	84
PID 4848 wrote to memory of 2264	4848	is-7RI7M.tmp	84
PID 2264 wrote to memory of 1492	2264	ezsearcher61.exe	88
PID 2264 wrote to memory of 1492	2264	ezsearcher61.exe	88
PID 2264 wrote to memory of 1492	2264	ezsearcher61.exe	88
PID 2264 wrote to memory of 5104	2264	ezsearcher61.exe	93
PID 2264 wrote to memory of 5104	2264	ezsearcher61.exe	93
PID 2264 wrote to memory of 5104	2264	ezsearcher61.exe	93
PID 5104 wrote to memory of 1540	5104	cmd.exe	95
PID 5104 wrote to memory of 1540	5104	cmd.exe	95
PID 5104 wrote to memory of 1540	5104	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:1116
- C:\Users\Admin\AppData\Local\Temp\is-F0OJI.tmp\is-7RI7M.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-F0OJI.tmp\is-7RI7M.tmp" /SL4 $801B8 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2157759 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4848
- - C:\Program Files (x86)\ezSearcher\ezsearcher61.exe
    "C:\Program Files (x86)\ezSearcher\ezsearcher61.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2264
  - - C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\vzGVyZeovhc.exe
      4⤵
      Executes dropped EXE
      PID:1492
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ezsearcher61.exe" /f & erase "C:\Program Files (x86)\ezSearcher\ezsearcher61.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5104
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ezsearcher61.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1540

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)\ezSearcher\ezsearcher61.exe

Filesize
3.3MB

MD5
98feded3c8352af3c2f8119159b692c6

SHA1
f9f6c0f9ae50386a1de5d10cbb33e99cd71b64c2

SHA256
2afaa54c041ecd3810862b5a72c55def8043e5aad7579f3703b7cacac10d87f6

SHA512
d5326b14f753490ec902cae29a8592d4f5c9325b386933a982f40d1f241f529b6699193bf45e2bf56cf4280163fc391e6f2ba4b86f2fc1c8098659af536b688c

Download Submit
C:\Program Files (x86)\ezSearcher\ezsearcher61.exe

Filesize
3.3MB

MD5
98feded3c8352af3c2f8119159b692c6

SHA1
f9f6c0f9ae50386a1de5d10cbb33e99cd71b64c2

SHA256
2afaa54c041ecd3810862b5a72c55def8043e5aad7579f3703b7cacac10d87f6

SHA512
d5326b14f753490ec902cae29a8592d4f5c9325b386933a982f40d1f241f529b6699193bf45e2bf56cf4280163fc391e6f2ba4b86f2fc1c8098659af536b688c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7IL9O.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F0OJI.tmp\is-7RI7M.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-F0OJI.tmp\is-7RI7M.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\vzGVyZeovhc.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{99cae5c0-1ab4-11ed-899c-806e6f6e6963}\vzGVyZeovhc.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1116-156-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1116-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1116-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2264-143-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2264-144-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2264-142-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2264-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2264-152-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download
memory/2264-155-0x0000000000400000-0x000000000154C000-memory.dmp

Filesize
17.3MB

Download

Analysis

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