nymaim | a6840fcd35d03f2c4ec08398ce46c64949590cc2cb7b66e83fc85e0c9d74be00

General

Target

file.exe
Size

1.5MB
MD5

fbcc03e94a8d693f569ca109bd729279
SHA1

eb90fef8f897e64910f3a83d426ff81c4aad1f88
SHA256

a6840fcd35d03f2c4ec08398ce46c64949590cc2cb7b66e83fc85e0c9d74be00
SHA512

5e2325a55e93256f96236eb4f2441e77926e4dd686e47426a1f457762d5d70d26616b78ab420f8719c17c0a307c46270e21fc663306c763826f6189970729682
SSDEEP

24576:g20hhV+eX96RPoIkVhsX7485PvSgWIF9KhwdAYf+kATuCqtn/:g2QVL6RPIVhuN5qi9KhwkkATuCE/

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
5028	file.tmp
1116	NitFiles451.exe
5088	fj105b2d.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	NitFiles451.exe

Loads dropped DLL 1 IoCs

pid	Process
5028	file.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 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-8UK4I.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-824D7.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-3DIAS.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-O1M5A.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DGCD2.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-OU6K2.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-FV8A6.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-UBHP6.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-JKE5D.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-T6EOM.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-FU8QN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-EA69F.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-LCNDN.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-3358O.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.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
4688	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1116	NitFiles451.exe
1116	NitFiles451.exe
1116	NitFiles451.exe
1116	NitFiles451.exe
1116	NitFiles451.exe
1116	NitFiles451.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4688	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4976 wrote to memory of 5028	4976	file.exe	81
PID 4976 wrote to memory of 5028	4976	file.exe	81
PID 4976 wrote to memory of 5028	4976	file.exe	81
PID 5028 wrote to memory of 1116	5028	file.tmp	82
PID 5028 wrote to memory of 1116	5028	file.tmp	82
PID 5028 wrote to memory of 1116	5028	file.tmp	82
PID 1116 wrote to memory of 5088	1116	NitFiles451.exe	83
PID 1116 wrote to memory of 5088	1116	NitFiles451.exe	83
PID 1116 wrote to memory of 5088	1116	NitFiles451.exe	83
PID 1116 wrote to memory of 2180	1116	NitFiles451.exe	91
PID 1116 wrote to memory of 2180	1116	NitFiles451.exe	91
PID 1116 wrote to memory of 2180	1116	NitFiles451.exe	91
PID 2180 wrote to memory of 4688	2180	cmd.exe	93
PID 2180 wrote to memory of 4688	2180	cmd.exe	93
PID 2180 wrote to memory of 4688	2180	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Users\Admin\AppData\Local\Temp\is-T92JK.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T92JK.tmp\file.tmp" /SL5="$501BE,1315243,233984,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:5028
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1116
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\fj105b2d.exe
      4⤵
      Executes dropped EXE
      PID:5088
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2180
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4688

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)\Nit Files\NitFiles451.exe

Filesize
2.1MB

MD5
8cd7169d2109ca55fd696e8e5a837051

SHA1
96f4b28231f0d9226f07c46367d1eceb538db974

SHA256
3311b4e4f4b816fa598e7dac78e77e163e753b111d37100bf9a5938452fbef3a

SHA512
2d1c608c9d273ca0f49ae9f182097a9cb65479df7053aee57667e5d51104b785d9f02ad2a892fb54cbefbcf6344b0e6a40a2f1ff36a9646377da178a2d94e56a

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
2.1MB

MD5
8cd7169d2109ca55fd696e8e5a837051

SHA1
96f4b28231f0d9226f07c46367d1eceb538db974

SHA256
3311b4e4f4b816fa598e7dac78e77e163e753b111d37100bf9a5938452fbef3a

SHA512
2d1c608c9d273ca0f49ae9f182097a9cb65479df7053aee57667e5d51104b785d9f02ad2a892fb54cbefbcf6344b0e6a40a2f1ff36a9646377da178a2d94e56a

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-45BDE.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T92JK.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-T92JK.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\fj105b2d.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\fj105b2d.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1116-151-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/1116-142-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/1116-143-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/1116-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1116-154-0x0000000000400000-0x000000000141B000-memory.dmp

Filesize
16.1MB

Download
memory/4976-138-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4976-132-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/4976-155-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download

Analysis

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